GP-1052, R.» 6

January 1977

Glossary,Acronyms,AbbreviationsSpace Transportation Systemand Associated Payloads

GP-1052, Rex 6

GLOSSARY, '"ACRONYMS,ABBREVIATIONSSPACE TRANSPORTATION SYSTEM ANDASSOCIATED PAYLOADS

Prepared By:

/A. Mo KOLLER,Performance Management and Tracking

Approval!

Wo Co RAINWATERChief, Management Planning and Control Office

FOREWORD

This document was prepared in order to facilitate communications

for the Space Transportation System (STS) and Associated Payloads

(see Glossary for definitions). It contains a glossary and a listing of

Acronyms and Abbreviations in current use, and is intended for use by

those who write/interpret/prepare material for publication relative to

the Space Transportation System.

It is recognized that the listing is not all inclusive or complete. This

document will periodically be updated to provide a current listing of all

approved STS and Associated Payloads acronyms and abbreviations.

Copies of this document are available at the KSC Library (Docu-

ments Section).

Recommendations relative to this listing should be directed to:

Dr. A. M. Koller, Jr., SP-MPC, 867-2126

DISTRIBUTION:

STDL-ENWSI-D (300 copies)

S E C T I O N I

G L O S S A R Y

This Section contains a glossary of terms (and definitions)in current usage for the Space Transportation System (STS)and Associated Payloads.

ACCEPTANCE TESTSTeststo determine that a part, component, subsystem,or facility is capable of meeting performancerequirements prescribed in purchase specifications orother documents specifying what constitutes theadequate performance capability for the item.

ASSEMBLYA"number of parts, or subassemblies and/or anycombination thereof, joined together to perform aspecific function and capable of disassembly. Thedistinction between an assembly and a subassembly isdetermined by the individual application. An assemblyin one instance may be a subassembly in another, whereit forms a portion of an assembly.

ATTACHING PARTAnitemused to attach assemblies or parts to theequipment, or to each other.

AUTOMATED PAYLOADSThosepayloads which are supported by an unmannedspacecraft capable of operating independently of theSpace Transportation System (STS).

AUXILIARY STAGEAsmallpropulsion unit used with a payload, whenrequired. One or more of these units may be used witha payload, to provide the additional velocity requiredto place a payload in the desired orbit or trajectory.

A propulsion system that is used to provide midcoursetrajectory corrections, braking maneuvers, and/ororbital adjustments.

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BILL OF WORK (BOW)A detailed work schedule which lists all Operation 6Maintenance (OEM) tasks required to be performed ateach work station for a specific vehicle turnaround.It also contains applicable information such assequence of performance, OSM instruction number, workauthorization number, time allocated, manpower, skilllevel, and the start and completion data.

CARGOEverything contained in the Shuttle Payload Bay plusother equipment located elsewhere in the Orbiter whichis user unique and not carried in the standardbaseline Orbiter weight budget.

CERTIFICATIONFormal documentation that the individual has reachedthe prescribed skill or knowledge level as cited in aNASA/KSC specification, contract specification, orother appropriate documents.

COMMERCIAL PART OR ITEMA part or item which is manufactured primarily for thecommercial rather than the Government market andhaving both commercial and Government applications.Commercial parts also include parts which aremanufactured in accordance with normal commericalquality controlled production runs which meet orexceed the requirements of Government specificationsor standards .

COMPONENTAn assembly or any combination of parts, subassembliesand assemblies, and assemblies mounted together andnormally capable of independent operation in a varietyof situations.

CONCURRENT DELIVER?delivery of support items concurrently with the

end item being provisioned.

CONDITION MONITOREDtfhose items tKat have neither limited life nor on-condition maintenance as their primary maintenanceprocess. Condition monitoring is accomplished mainlyby in-place instrumentation, sampling, and subsequenttrending analysis which provides data to predict anincipient failure.

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CONSTRUCTION AWARDTheeffective date of direction from the KSCcontracting office to the selected contractorauthorizing commencement of work. Issue of the noticeof award by the KSC procurement office completes thismilestone.

CONSTRUCTION COMPLETEAppropriatefacility construction is complete and thefacility is available for equipment installation.Certification by the DE site activation officecompletes this milestone.

CONTRACT AWARDTheeffective date of direction from the KSCcontracting office to the selected contractorauthorizing commencement of work. Issue of the noticeof award by the KSC procurement office completes thismilestone.

CONTRACTORThesupplier of the end item and associated supportitems to the Government under the terms of a specificcontract.

CUSTOMER (or USER)An organization or individual requiring the servicesof the Space Transportation System.

DEDICATED SPACELABAnextensionmodule devoted to a single disciplinewhich may fly more than once a year for several years,and which may be assigned to a payload developmentcenter.

DESIGN CHANGEA NASAapproved engineering change incorporated intothe end item which modifies, adds to, deletes, orsupersedes parts in the end item.

DESIGN REVIEWSCritical Design Review (CDR).The completion of a meeting chaired by the KSC ShuttleProjects Manager, or his designated representative, toassure that the completed designs are in consonancewith Level II and project specifications.

Preliminary Desing Review (PDR).The completion of a meeting chaired by the KSC ShuttleProjects Manager, or his designated representative, atwhich preliminary designs are reviewed with primecontractors to assure compliance with system andproject requirements.

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30X Design Review.A meetingchaired by the responsible DE projectengineer, or his designated representative, at whichpreliminary designs are reviewed to assuresatisfaction of system and project requirements.

9OX Design Review.A meetingchaired by the responsible DE projectengineer, or his designated representative, at whichfinal designs are reviewed to assure compliance withsystem and project specifications.

DRAWINGSGraphic data, including drawings as defined in MIL-STD-100A and prepared in accordance with MIL-D-1000,Category D, aperture cards in accordance with MIL-C-9877; graphs, or diagrams, industry standards andindustry specifications, on which details arerepresented with sufficient information to definecompletely, directly or by reference, the end resultin the selection, procurement, and manufacture of theitem required.

END ARTICLE/END ITEMA physical element of the Space Transportation System.It is a functional physical entity related andselected for the purpose of system development,procurenent, and logistics.

END ITEMA iinal combination of end products, components parts,or materials which is ready for its intended use;e.g., Orbiter, receiver, amplifier, recorder, groundsupport equipment, etc.

ESTIMATED ON DOCK (EOD) DATEThedate the equipment is forecast to arrive on-dockat KSC. Initially, this date should coincide with thedesired contract delivery date for purchasedequipment. Subsequent to contract award, the datewill reflect the vendor's estimate of his ability todeliver.

EXPERIMENTThesystem of hardware, software, and procedures forperformance of a scientific or applicationsinvestigation undertaken to:

• Discover unknown phenomena• Establish the basis of known laws• Evaluate applications processes and/or equipment

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FACILITY NEED DATEThat date when the appropriate facility is required toreceived program hardware (Orbiter, SRB, ET) for testand checkout. First operational use of the facilitycompletes this milestone.

FAILURE MODES AND EFFECTS CRITICALITy ANALYSIS (FHECA)AnanalysistodetermineaLRU/SRUmethodandfrequency of failure and the resulting effects.

FEDERAL ITEM IDENTIFICATIONA complete description in accordance with FED-STD-5.

FEDERAL SUPPLY CODE FOR MANUFACTURERS (FSCM)Providesanonsignificantcode assigned to identifymanufacturers. Normally used with the Manufacturer'sPart Number (see Federal Cataloging Handbooks H4-1 andH4-2 for codes).

FIRST MANNED ORBITAL FLIGHT (FMOF)Liftoff otthefirstmanned Space Shuttle from thelaunch pad at KSC on the first manned orbital flight.Vehicle flight beyond "tower clear" completes thismilestone. Subsequent flights use similardefinitions.

FLIGHTThat portion of a mission encompassing the period fromLaunch to Landing, or Launch to Termination, of theactive life of a spacecraft. The term Shuttle"Flight" means a single Shuttle round trip (itslaunch, orbital activity, and return). One flightmight deliver more than one payload. More than oneflight might be required to accomplish one mission.

FLIGHT READINESS FIRING (FRF)FirstShuttlevehicleTs stacked on the launch pad,and a Countdown Demonstration Test (CDDT) performed(designed to duplicate to the fullest possible extentan actual launch countdown). Propellant loadingoccurs in normal launch sequence, culminating a 20second flight readiness firing. Engine shutdown after20 seconds of sustained firing completes thismilestone.

FREE FLEERAny payload that is detached from the Orbiter duringthe operational phase of that payload, and is capableof independent operations.

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GROUND SUPPORT EQUIPMENT (GSE)Non-flightequipment,Implements and the devicesrequired for the handling, servicing, inspection,testing, maintenance, alignment, adjustment, check,repair and overhaul of an operational end item or asub-system or component thereof. This may includeequipment required to support another item of groundsupport equipment as defined herein.

HARDWARE DEVELOPMENT COMPLETEThe date all hardware manufacture/procurement has beencompleted, and hardware is ready to be delivered underterms of the contract. Notification from thecontractor to the responsible KSC office completesthis milestone.

INDENTUREA method of showing relationships to indicatedependence and an order of dependence. Indenturingprovides a top down breakdown of an item into itsassemblies, subassemblies, components, and parts.

INITIAL DELIVERSThedateoT delivery for the first item of equipmentto be delivered under terms of the contract.Acceptance of the equipment by the SP site activationoffice completes this milestone.

INITIAL OPERATIONAL CAPABILITY (IOC)P o i n t i n t i m e a t w h i c h t E e first operationalconfigured Space Shuttle vehicle is prepared forflight. Successful completion of DDTSE andcertification of flight hardware completes thismilestone.

INITIAL OUTFITTING/LAY-INThe positioning of support items at user levels and atintermediate supply and maintenance levels as initialissues in anticipated support of newly deployed enditems.

INSTALLATION COMPLETEThat date when the DE site activation office declaresthe complete system has been installed at thefacility. Certification by the SP site activationoffice completes this milestone.

IN-STORAGE MAINTENANCEThe actions performed on a stored item to retain it ina specified condition by providing systematicinspection, detection and prevention of deterioration.

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INTEGRATED LOGISTICSThoseinterrelated processes which identify andprovide the service and resources (hardware and data)required to achieve an economical and timely supportof operations. The principal processes are: logisticsengineering analyses, maintainability, maintenance,operational maintenance documentation, supply,transportation/packaging, training, and logisticsmanagement information.

INTEGRATION5combination of activities and processes to assemblecomponents, subsystems, and system elements intodesired configuration, and to verify compatibilitybetween the constituents of the assembly.

INTEGRATION LEVELSLevel I-Cargo/Shuttle Integration; Integration into theOrbiter of everything that goes on a single Shuttleflight.

Level II-Element into Cargo Integration; Assembly of Spacecraftelements and/or free flyers (with or without Tug) intoa cargo for a single Shuttle flight.

Level III-Instrument to Supporting System Integration;Integration of one or more instrument assemblies withSpacelab elements (extension module and/or pallet) orthe free flyer payload.

Level IV-Instrument Assembly Integration; Assembly ofindividual instruments and their unique supportingsubsystem into a compatible package of equipment toaccomplish specific mission objectives on a givenflight.

INTERFACEThemechanical, electrical, and operational commonboundary between two constituents of a system.

INTERIM RELEASEAuthorization given a contractor to release supportitems to production or procurement simultaneously withhis production requirements for like items prior tosubmission of a Spare Parts Order.

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INTERIM UPPER STAGE (IUS)An upper stage capable of being launched from thecargo bay of the Orbiter, and intended for use priorto the availability of the Space Tug. As presentlyplanned, it will be a modification eft an existingstage, may or may not be retrievable for reuse, andwill be capable of the delivery but not the retrievalof payloads.

INVITATION FOR BIDS (IFB)ThatpointIntime when the complete assembly ofdocuments related to a particular contract award willbe provided to the prospective bidders by a formaladvertisement for the purpose of competitive bidding.Issue of the invitation by the KSC procurement officecompletes this milestone.

ITEMAny level of _ hardware assembly (system, element,subsystem, equi'pment, component, or part).

K-FACTORSA series of terms used to derate Meantime BetweenFailure (MTBF) to a Meantime Between Demand (MTBD) onthe supply system. Four examples are:

K! Enginttring correction based on LRU complexity, greater than 1

r\2 Total failure ratio to relevant failure, greater than 1

r\3 Ratio of operating hours to flying hours

r\4 Ratio of demands on supply system to failures

KI X r\2 X ((3 X 1(4

LAUNCH PADThepad area from which the Space Shuttle will belaunched. The stacked Space Shuttle will undergofinal prelaunch checkout and countdown at the launchpad.

LAUNCH PROCESSING SYSTEM (LPS)A high speed digital computer operated checkout systemused to support test, checkout, launch control, andoperational management of launch site groundoperations at KSC.

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LAUNCH PROCESSING SYSTEM (LPS) SUPPORT AVAILABLEPointIntime when LPS for a given facility is readytor use by KSC test personnel. Certification by theSP site activation office completes this milestone.

LEVEL OF REPAIR ANALYSIS (LORA)Aprocessforrecommending repair levels of LRUs,SRUs, assemblies, and sub-assemblies which will accrueminimum total support costs within operational andtechnical constraints over the system design life. Itforms the basis for assigning repair level; repairVersus discard-at-failure decision; repair partsprovisioning; Source, Maintenance, and Recoverability(SMR) coding; maintenance planning, and documentation.

LINE REPLACEABLE UNIT (LRU)Anyitemwhosereplacement constitutes the optimumorganizational maintenance repair action for a higherindenture item (i.e., any assembly which can beremoved and replaced as a unit from the system at theoperating location).

LOGISTICS ENGINEERING ANALYSES (LEA)Xcompositeof analysis techniques which are used toidentify the necessary logistics resources to supportoperation and maintenance functions in a timely andeconomical manner. This includes training, level ofrepair, spares determination analyses, etc.

LONG LEAPT1MB ITEMSThoseitemswKich because of their complexity ofdesign, complicated manufacturing processes, orlimited production, may cause production orprocurement cycles which would preclude timely oradequate delivery, if not ordered in advance of normalprovisioning.

MAINTAINABILITY (M)T h e d e s i g n , installation, and operatingcharacteristics of an item which enables it to beretained in or returned to a specified operationalcondition by expending resources at an acceptable rateusing prescribed procedures.

MAINTENANCETheactions taken to retain an item in a specifiedcondition by providing systematic inspection,detection, and servicing for the prevention otincipient failure, and the action taken to restore anitem to a specified operational condition. Thisincludes fault isolation, item replacement, repair andverify serviceable.

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MAINTENANCE CONCEPTAdescription of the planned method for accomplishingmaintenance. A thought process which relates themaintenance tasks to be performed to the maintenancelevels to support the operation of thesystem/equipment in the planned operationalenvironment.

MAINTENANCE ENGINEERING ANALYSIS (MEA)An analysis of contract end item/LRU/SRU or equivalentitems which defines the repair tasks necessary torestore a system to operational condition utilizingthe maintenance philosophy/ maintainabilitycharacteristics and other factors.

MAINTENANCE GROUND EQUIPMENT (MGE)The equipment which is used to support the maintenanceoperations for vehicle, payload, stages, facilities,or other MGE.

MAINTENANCE LEVELSAll maintenance functions performed either directly onthe vehicle or in a supporting role categorized in oneof the following three categories:

a. Organizational Level - Maintenance performed onvehicle subsystems and related support equipmentin direct support of the turnaround flow. Itincludes scheduled and unscheduled maintenanceactions required to inspect, service, calibrate,replace, repair and modify in-place, and reverify(sub)systems and associated components.

b. Intermediate Level - Maintenance that isperformed in direct support of organizationallevel maintenance and involves disposition,repair, service, modification, calibration, andverification of items removed duringorganizational maintenance.

c. Depot Level - Maintenance that is performed bydesignatedmaintenance sources; e.g.,manufacturers, USAF Air Logistics Centers, NASACenters, etc. It normally consists ofmaintenance that requires MGE, facilities, orskills which are not economically available atthe intermediate level; e.g., repairing,modifying, overhauling, reclaiming, or rebuildingparts, assemblies, subassemblies, components, andend items, manufacturing of unavailable parts andproviding technical assistance to theorganizational and intermediate maintenancelevels.

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ORIGINAL PAGE ISOF POOR QUALITY

MAINTENANCE TRAININGDetailedwork-oriented instructions on servicing,maintenance, overhaul, and repair of product enditems, including support and facilities equipment.

MANAGEMENT CODINGTheassignment of codes consisting of letters and/ornumerals to support items to record managementdecisions, such as sources for resupply, prescribedlevels of maintenance, item managers, and othermanagement data.

MATERIAL SERVICE CENTERS (MSC)An activity established adjacent to a facility or workarea concentration for the purpose of furnishingsupply support and supply support services to allorganizations and functional activities in theimmediate area(s) which require such service. EachMSC will provide a single point of contact with theKSC supply system, and will receive, stock, and issuematerial and supplies required by the area(s) served.

MISSIONThe performance of a coherent set of investigations oroperations in space to achieve program goals.

Examples tMeasure detailed structure of sun'schromosphere.Survey mineral resources of North America.

MOBILE LAUNCH PLATFORM (MLP)The elements of the Space Shuttle will be stacked uponthe MLP while in the Vehicle Assembly Building (VAB).After stacking, it will be rolled out to the launchpad.

MODIFICATION COMPLETEThatdatewhenexisting facilities at KSC have beenmodified. Certification by the SP site activationoffice completes this milestone.

MULTIPLE PASfLOADSMorethanone separate payload carried in the cargobay.

MULTIPURPOSE SPACELABAn extension module involving a variety of disciplinesusually tor specific flights, and which may requirethe services of a payload integrator or agent.

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NATIONAL STOCK NUMBER (NSN)A discrete identifying number assigned to each item ofsupply within the Federal Catalog System. A datachain consisting of the four digit Federal SupplyClassification, two digit Country Code and seven digitFederal Item Identification Number in that order. Mayhave a two character Dual cognizance Code and onecharacter Material Control Code prefix, and a twocharacter Special Material Identification Code suffix.

OFF-EINEAn activity conducted (by a payload owner) independentof any STS element (i.e., Tug, Spacelab, or Shuttle).This normally means the activity is conducted in aseparate facility as well.

OFF-LINE MAINTENANCEThat maintenance function performed at theintermediate and depot maintenance levels.

ON-CONDITIOH MAINTENANCEThoseitem,whichWill remain in place until anassessment of the item's condition indicates thatremoval is required, are classified as on-conditionitems. The assessments are made at intervalsdetermined by the item's failure characteristics, andmany consist of inspections, measurements, test, orany other means not requiring disassembly or removalof the item.

ON-LINE MAINTENANCEThat maintenance function performed at theorganizational level.

ON-LINE (STS)An activity conducted with payload and one or more STSelements. This is broked down as follows:

On-Line Shuttle; An activity encompassing apayload, its carrier, and theShuttle vehicle.

On-Line Spacelab; An activity encompassing apayload and its Spacelab.

On-Line Tug/IUS; An activity involving apayload and the Tug/IUS.

ON-THE-JOB TRAINING (OJT)Aplannedprogramwhich augments classroom trainingthrough self-study and supervised instruction toprovide expanded knowledge and job proficiency whilethe trainee is actually working in a duty assignment.

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OPERATIONS AND MAINTENANCE DOCUMENTATION (OMD)OMDincludes: engineeringdrawingsand lists,Organizational Operations and Maintenance (OM) manualsincluding OHIs; Standard Repair manuals. IllustratedParts Breakdowns (IPBs), Intermediate Maintenancemanuals, Non-destructive Inspection (NDI) manuals,Work Unit Code (HUC) manuals, and Time ComplianceTechincal Instructions (TCTIs).

OPERATIONS AND MAINTENANCE (OM) MANUALSOMmanualsareorganizedprocedual informationspecifying methods of operating and maintaining flighthardware and support equipment. OM manuals will beused in the performance of day-to-day operations andmaintenance tasks.

OPERATIONAL CHECKOUTThat periodof time when the Operations andMaintenance (O6M) organization performs crew training,simulations, and procedural familiarization prior tofirst use on flight hardware. Certification of groundtest and checkout, and crew readiness to support theassigned mission prior to receipt of flight hardwarecompletes this period.

OPERATIONAL READINESS DATE (ORD)Thatdatewhen a facility, including all systems andequipment, is operationally ready and is turned overto the user/operator for operational training andsystems familiarization prior to first use in supportof flight hardware checkout. Certification by the SPsite activation office completes this milestone.

OPERATOR NEED DATEtONDJThedate the KSC operator (OSM organization) requiresthe equipment/GSE to be made available to them, toaccomplish any remaining work required prior to firstuse.

OPTIMUM REPAIR LEVELThe maintenance level selected to perform specifictasks and functions for a given equipment item. Thedecision to repair equipment at the indicatedmaintenance level requires that all authorizedmaintenance capability (remove, replace, assembly, ortest) be provided to that level. This does notprevent some repair from being done at a differentlevel of maintenance for a different task.

OPTIMUM REPAIR LEVEL ANALYSIS (ORLA)See "Level of Repair Analysis*.

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ORBITER PROCESSING FACILITY (OFF)TnTITia building at KSC with two bays in which theOrbiter undergoes post flight inspection, maintenance,and premate checkout prior to payload installation.

ORGANIC SUPPORTIn-houseHASA/DOD assumption of intermediate or depotsupply and maintenance activity vis-a-viscontractor/vendor support.

OUTFITTING AWARDTneeffective date of direction from the KSCcontracting officer to the selected ^ contractorauthorizing commencement of work. Issue of notice ofthe award by the KSC procurement office completes thismilestone.

OUTFITTING COMPLETEThat date when all systems/equipment has beenemplaced. Certification by SP site activation officecompletes this milestone.

PALLETAn external unpressurized platform for mountingtelescopes, antennas, and other instruments andequipment requiring direct space exposure forconducting science and applications activities onSpace Shuttle Spacelab missions. The pallet may becomposed of segments.

PARTOne piece, or two or more pieces, joined togetherwhich are not normally subject to disassembly withoutdestruction or impairment of designed use.

PAyLOAD CHANGEOUT ROOMAnenvironmental controlled room on a movable supportstructure which includes a manipulator system fortransferring a payload vertically between a transportcanister and the Orbiter payload bay.

PECULIAR PARTAny part which must be produced to order in accordancewith a particular drawing and/or specification. Anypart requiring flight certification shall beclassified peculiar. Also, normally standard partsthat must be selectively accepted (to criteriadifferent from the usual standard part requirements)shall be considered peculiar.

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PHASED PROVISIONINGArefinementto the provisioning process wherebyprocurement of selected items is phased by timeinterval into the later stages of production, therebyenhancing the ability of the provisioning activity toselect the most favorable mix of requirements.

PRELIMINARY ENGINEERING REPORT (PER) - FINAL RELEASEThat date when preliminary engineering is complete andthe final documentation has been released.Distribution of the final documentation completes thismilestone.

PRICED SPARE PARTS LISTApricedlist of items and quantities of spare partsselected for procurement under the contract.

PROCURE/FABRICATE COMPLETEThatdatewhen all procurement and fabrication for aparticular facility has been . finished. Certifiedacceptance by the SP site activation office completesthis milestone.

PROCUREMENT METHOD CODE (PMC)Thecontractor will use a alpha-suffix codes (6, 7 or8) contained in MIL-STD-789B to communicate his reasonfor assignment of a Contractor Recommended Code (CRC).Procurement Method Codes (1 through 5) will always beassigned by Government representatives (KSCProvisioning Team) from the CRC codes furnished by thecontractor.

PROGRAMAn activity involving manpower, material, funding, andscheduling which is necessary to achieve desired goals(i.e.. Shuttle Program, Solar Astronomy Program,etc.,).

PROGRAMMING CHECK LIST (PCL)Is used to provide data governing initial provisioningfor end items of Shuttle hardware and related supportequipment.

PROVISIONING ACTIVITYTheKSCProvisioning Team, Shuttle Projects Office,which is responsible for the selection of, and thedetermination of requirements for, provisioned items.

PROVISIONING PERFORMANCE SCHEDULE (PPS)CheckListofentriesincluding schedules in theprovisioning process that is used to monitor suchevents.

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PROVISIONING SCREENINGProvisioningScreening, when required by theProvisioning Requirements Statement, will beaccomplished in accordance with DOD 4100.38M(Provisioning and other Preprocurement ScreeningManual).

PROVISIONING SPECIFICATIONTsthecontracturalinstrument to provide clear andconcise instructions which will achieve the objectiveof providing adequate, timely and economical support,by need dates tor systems and end items entering theinventory. It provides NASA with the flexibility inselecting minimum essential data for each specificprocurement, and provides the contractor the detailedguidance to fulfill provisioning requirements. Thefinalized Provisioning Requirements Statement and theProvisioning Specification shall be appended to theend item contract.

PROVISIONING TECHNICAL DOCUMENTATION (PTD)I sthegenerictermusedto reference the varioustypes of Provisioning Lists, decks of Punch CardsMechanized (PCM), or Automatic Data Processing (ADP)tapes. PTD shall be furnished by contractors to KSCProvisioning Activities tor the identification,selection, and determination of initial requirementsand cataloging of support items to be procured throughthe provisioning process. Supplementary ProvisioningTechnical Documentation (SPTD) is also considered tobe a part of PTD.

QUALITATIVE REQUIREMENTSQualitativerequirements further amplify themaintenance concept to the designer conveying specialfeatures which the operator/user wants designed intothe hardware. Specialized qualitative requirements tobe considered for specification insertion are:

Failure DetectionPerformance Degradation DetectionBuilt-in Test Equipment (BITE)AdjustmentsGSE-Integrated/Automated/ManualSelf-TestSkill LevelsSpecial ToolsAccessibilityInterchangeability

ORIGINAL PAGE ISPOOR QUALITY

QUANTITATIVE REQUIREMENTSQuantitative requirements provide a firm goal(appointment of time available for maintenance) forthe designer to meet his design, and also provide arequirement whose goal can later be demonstratedduring the verification period.

This type of quantitative requirement specified in amaintainability activity must be responsive to theoperational use of the equipment. Times may bespecified in manhours, clockhours, or both.Maintenance times may also be broken out and leviedfor the various elements that comprise the totalrepair functions such as fault isolate, remove/replaceor checkout. The requirement will also be specifiedfor all applicable levels of maintenance; these areorganizational, intermediate and depot. A listing ofthe common types of requirements to be considered are:

Maintenance Hours/LaunchMaintenance Hours/Operating HourMean Time To RepairMaximum Repair TimeScheduled Replacement IntervalsInspection Frequency and Maintenance HoursServicing Frequency and Maintenance Hours

READY TO SUPPORTThat date when equipment/facilities are required tosupport project/facility milestone. First operationaluse of the equipment/facilities completes thismilestone.

REORDER POINTTheinventory level, representing procurement leadtime and safety level quantitative requirements as on-hand and on-order balances, at which spares itemreplenishment is to be initiated.

REPAIR PARTSThose support items that are coded as "not repairable"(i.e., Consumable Items).

REPAIRABLE ITEMA n i t e m I n unserviceable condition that can beeconomically repaired and returned to a serviceablecondition.

Note;Repairable status is determined after failureoccurs.

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REPARABLE ITEM755item, which because of economic and designcharacteristics, is determined to be subject to repairfor return to use when it becomes unserviceable.

Note:"This term reflects the logistics status ratherthan the physical status of the item. Reparablecategorization is made before failure occurs.

REQUEST FOR PROPOSAL (RFP)That point in time when the necessary documentation isissued to request proposals from prospective biddersprior to negotiation of a contract. Issue of therequest by the KSC procurement office completes thismilestone.

SAFETif TRAININGInstructions which alert a trainee to those conditionsor operations which could be substantially dangerousto the operator, or other hazard that would damageequipment or property.

SCHEDULED DELIVERYWhenNASAprovides a required delivery schedule witheach Spare Parts Order (SPO), the contractor shallaccept the order and within 30 days notify NASA of hisacceptance of the schedule or provide a proposed lineitem delivery schedule for negotiation. The approvedschedule will be incorporated into the contract bysupplemental agreement.

SCHEDULED MAINTENANCEAnyrepetitive maintenance action deemed necessary toinsure the functional success of equipment includingperiodic servicing and replacement of time/cyclecomponents.

SHARED EQUIPMENT NEED DATE (SEND)Thedateequipment/GSE t o be used at more than onelocation is required to' support site activationactivities at the secondary location(s). The needdate at the first user's location will be the SiteActivation Need Date (SAND) for that location.

SHOP REPLACEABLE UNIT (SRU)Anyitemwhosereplacement constitutes the optimum,intermediate, or depot level of repair action, i.e., amodule for an LRU which can be removed at anintermediate or depot repair facility.

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SITE ACTIVATION NEED DATE (SAND)TKedateequipraent/GSE is required on-dock at KSC tosupport installation and validation. Uncrating,inspection, and handling time must be allowed inestablishing the SAND.

SOURCE, MAINTENANCE AND RECOVERABILITY (SMR) CODEAn SMRcodeshall berecommended by the end itemcontractor or design agency for each component/part.The code will be used to communicate maintenance andsupply instructions to the various support/maintenanceactivities.

SPACELABA laboratory designed for space operations andcomposed of modules or pallets suitable foraccommodating instrumentation for conducting researchand application activities on Shuttle Sortie Flights.On a given flight, the Spacelab configuration can becomprised of a module only, a pallet only, or acombination of a module and a pallet.

SPACE TRANSPORTATION SYSTEM (STS)An integrated system consisting of:

Space Shuttle (Orbiter, External Tank, SolidRocket Boosters)

Upper Stage for boost to extended orbit (IUS,SSUS, TUG)

SpacelabAny associated flight hardware and software

SPACE TUGAn upper stage installed for launch, or recovery andlanding, in the cargo bay of the Orbiter. Developedspecifically with the capability for delivery,retrieval, and servicing of payloads in orbits andtrajectories beyond the capability of the Shuttlealone. It is intended to be retrievable forrefurbishing and multiple reuse.

SPARE PARTS ORDERA spare parts provisioning list which has beenapproved by the NASA Contracting Office, and releasedto the contractor for fabrication or procurement.

SPARESThose support items that are coded to be repairable(i.e. Reparable Items).

SPECIAL TOOLS, TEST EQUIPMENT S SUPPORT EQUIPMENTThose support itemsthat have single/peculiarapplication to a specific end item.

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STANDARD PARTAnypart or item which is adequately defined by arecognized Government-wide or industry-associatedstandard drawing and/or specification, and is normallyavailable from commercial, DSA, and/or GSA sources.(Examples of standard parts and items are nuts, bolts,washers, screws, pins, keys, grommets, rivets, o-rings, clips, fasteners, clamps, fittings, standardelectrical and electronic components, etc.)

STATEMENT OF PRIOR SUBMISSION (SPS)AcertificationEyanofferer/contractor thatProvisioning Technical Documentation (PTD) previouslyfurnished to the government may satisfy the immediatePTD requirements, with or without changes, to updatethe PTD to the end item configuration to be (or being)procured.

STS ASSOCIATED PAVLOADA specific complement of instruments, space equipment,and support hardware carried to space to accomplish amission (or discrete activity) in space.

SUBASSEMBLVTwo or more parts which form a portion of an assemblyor a component replaceable as a whole, but having apart or parts which are individually replaceable.(Examplest telephone dial, mounting board withmounted parts, etc.)

SUPPLEMENTARY PROVISIONING TECHNICAL DOCUMENTATION (SPTD)SupplementalProvisioningTechnical Documentation istechnical data used to describe parts/equipment andconsists of data such as specifications, standards,drawings, photographs, sketches and descriptions, andthe necessary assembly and general arrangementdrawings, schematic drawings, schematic diagrams,wiring and cable diagrams, etc. needed to indicatethe location and function of the item. As a minimum,SPTD must be capable of providing for:

Technical identification of items for maintenancesupport considerationsPreparation of item identifications for thepurpose of assigning National Stock NumbersReview for item entry controlStandardizationReview for potential interchangeability andsubstitutabilityItem management codingPreparation of stock/issue listsInitial procurement from the contractor ororiginal manufacturer

1-20

SUPPORT EQUIPMENTThose support items that are not an integral part ofan end item but are required in the operation of theend item.

SUPPORT EQUIPMENT INSTALLATION S CHECKOUT COMPLETEThat date when individual support equipment items havebeen completely installed and validated at thefacility. Certification by the SP site activationoffice completes this milestone.

SUPPORT ITEMSItemssubordinate to, or associated with, an end item(i.e., spares, repair parts, tools, test equipment,support equipment, and sundry materials) and requiredto operate, service, repair or overhaul an end item.

SUPPORT REQUIREMENTS ANALYSIS (SRA)Snanalysisaccomplished during the system design toestablish logistics support requirements. Theanalysis is a step-by-step process of predictingoperational and maintenance activities, and definingand documenting the required resources.

TRADE STUDIESStudiesconducted to compare alternative parameters,materials, or procedures.

TRAINING REQUIREMENTS ANALYSIS (TRA)Ananalysisaccomplishedtodetermine the skilllevels, type, and quantities necessary to support amaintenance philosophy, through maintenanceengineering analysis or support requirements analysis.

UNSCHEDULED MAINTENANCEAnymaintenanceactivity required as a result of therandom failures of equipment. It includes therestoration to a servicable condition of a failedsubsystem, end item, replacement package or unit,component, or part.

VALIDATIONVerification that the equipment/system meets theoperational needs of the OCM user, and is part of theturnover process from the design agency to the OSMagency.

1-21

VENDOR ITEM5nitem which is used in or attached to the end itemproduced by the contractor under his contract; andwhich is procured by the contractor on the open marketor from established sources, and for which thecontractor is not the design activity.

WORK STATIONAfacility or functional area where organizationallevel operations and maintenance tasks are performedin direct support of a turnaround cycle, or whereintermediate and depot level maintenance tasks onShuttle components (or related GSE) are performed.

WORK UNIT CODE (WUC)Asixalpha-numeric character indentured equipmentidentification code which uniquely identifies theentire system from top down to component level. Itfunctionally identifies the system, subsystem,assembly, component and significant reparable part onwhich maintenance is to be performed.

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S E C T I O N I IA C R O N Y M S & A B B R E V I A T I O N S

This Section contains acronyms and abbreviations in current usagefor the Space Transportation System (STS) and Associated Pay loads.

-A-

A AmpereAlphaAcceleration

ASA Advertise S AwardA/A Air to AirA/C Associate Contractor

AircraftA/D Analog to DigitalA/G Air to GroundA/N Alpha-NumericA/P AirportA/R As RequiredA/S Auxiliary StageAA Accelerated Assemblies

Airplane AvionicsAA/AL Airplane Avionics/Autoland

Automatic Approach/AutolandAADS Ascent Air Data SystemAAK Abort Advisory Equipment

Aerospace Auxiliary EquipmentAAFE Advanced Applications Flight EquipmentAAIR Advanced Atmospheric Sounder and Imaging RadiometerAAS Abort Advisory SystemAB AirborneABCR As-Built Configuration RecordABE Airbreathing EngineABES Airbreathing Engine SystemABM Advanced Bill of MaterialsABPS Airbreathing Propulsion SubsystemAC Alternating CurrentACC Automatic Control ConsoleACCEL AccelerometerACCU Audio Central Control UnitACD Accuracy Control DocumentACE Automatic Checkout EquipmentACES Acceptance Checkout £ Evaluation System

Acceptance Control Equipment SectionAutomatic Checkout Equipment Sequencer

ACI Age Controlled ItemACIL Automatic Controlled Instrument LandingACL Allowable Container Load

2-1

ACN Ascension Island (STDN)ACO Acceptance Checkout

Administrative Contracting OfficerAGP Audio Control Panel

Astronaut Control PanelACPH Associate Contractor Program ManagerACPO Associate Contractor Projects OfficeACPS Attitude Control Propulsion SubsystemACR Actual Cost ReportACRS Advisory Committee on Reactor SafeguardsACS Attitude Control Subsystem

Automated Control SystemACT Acquisition, Control of Test (Units)ACTA Activate Test ArticleACTIV ActivationAGO Avionics Cooling UnitAD Administrative Operation C Support Services

(KSC Directorate)ADAP Adaptive Intercommunication RequirementADB Aerodynamic Data BookADC Air Data Computer

Analog-to-Digital ComputerADF Automatic Display Finder

Automatic Direction FinderADI Attitude Direction IndicatorADL Avionics Development Lab (Downey, CA)ADP Acceptance Data Package

Automatic Data ProcessingADPA Air Data Probe AssembliesADPE Automatic Data Processing EquipmentADS Air Data System

Audio Distribution SystemADTA Air Data Transducer AssemblyACE Architectural and EngineeringAEC Aft End Cone

Atomic Energy CommissionAEDC .Arnold Engineering Development CenterAEM Acoustical Emission MonitoringAF Air frame

Audio FrequencyAft Fuselage

AFAD Armed Forces Acquisition DocumentAFB Air Force BaseAFC Automatic Frequency ControlAFCS Automatic Flight Control SystemAFD Aft Flight DeckAFEB Award Fee Evaluation BoardAFEC Award Fee Evaluation CommitteeAFETR Air Force Eastern Test RangeAFF Acceptance £ Ferry FlightAFFTC Air Force Flight Test Center (Edwards AFB)AFI Automatic Fault IsolationAFLC Air Force Logistics Command

2-2

AFM Air Force ManualAFPD Authorization For Program DevelopmentAFO Announced Flight OpportunityAFR Air Force RegulationAFS Air Force StandardAFSC Air Force Systems CommandAFSCF Air Force Satellite Control FacilityAFSIG Ascent Flight Systems Integration GroupAFSWC Air Force Special Weapons Center (Holloman AFB)AFT Atmospheric Flight Test

Aerodynamic Flight TestAFTA Acoustic Fatigue Test ArticleAG Artificial GravityAGC Automatic Gain ControlAGE Automatic Ground Equipment

Aerospace Ground EquipmentAGL Above Ground LevelAGO Santiago, Chile (STDN)AGOBS Advanced Geosynchronous Observation Environment

SatelliteAI Action ItemAID Abbreviated Item DescriptionAIDS Airborne Integrated Data SystemAIL Avionics Integration LaboratoriesAILS Automatic Instrument Landing SystemAIM Automated Information ManagementAIP Avionics Integration PlanAIR Action Item Report

Adaptive Intercommunication RequirementAIRME Apollo Initiator Resistance Measuring EquipmentAIST Agency of Industrial Science and TechnologyAJ Assembly JigASL Approach and LandingAL; AirlockALAS Automatic Landing Autopilot SubsystemALC Automatic Light ControlALpO Activity Level Dependent OperationsALE Airport Lighting EquipmentALERT Acute Launch Emergency Reliability TipALIO Activity Level Independent OperationsALS Alternate Landing Site

Advance Logistics SystemALSA Astronaut Life Support EquipmentALSS Airlock Support SubsystemALT Approach t Landing Test

AltitudeALTR Approach C Landing Test RequirementAM Actuator Mechanism

AmmeterAmplitude ModulationAdminstration fi Management Operations (KSC Directorate)

AHA Air Material AreaAMC Automatic Mixture Control

2-3

AMDS Advanced Missions Docking SubsystemAMEC Aft Master Events ControllerAMP Abort Motor FacilityAMI Air Speed Mach Indicator

Alpha Mach IndicatorAMOOS Advanced Maneuvering Orbit-To-Orbit ShuttleAMPR Aeronautical Manufacturers Planning Report

Aeronautical Manufacturers Progress ReportAMPS Atmospheric Magnetospheric & Plasmas in SpaceAMR Atlantic Missile RangeAMS Acoustic Measurement System

Amplifier SubsystemAMST Advanced Medium STOL TransportAMTAS Automatic Modal Tuning C Analysis SystemAMTD Automatic Magnetic Tape DisseminationAMTF Acoustic Model Test FacilityAN Array/NavyANA Air Force-Navy Aeronautical BulletinANAL AnalysisAND Air Force-Navy Aeronautical Design StandardANL AnalogANSI American National Standards InstituteAO Analog OutputAOA Abort-Once-Around

Angle Of AttackAOCRD Acceptance S Operational Checkout Requirements

DocumentAOPM Airline Operations Planning ModelAOS Acquisition Of SignalAOT Avionics Overall TestAP Procurement Supply S Transportation (KSC Directorate)APA Abort Programmer AssemblyAPC Advanced Propulsion Comparison StudyAPIC Automated Process Information FileAPIRD Authorized Procurement Information Requirements

DescriptionAPIRL Authorized Procurement Information Requirements ListAPLAC Analysis Program Linear Active CircuitsAPM Assistant Project ManagerAPP ApproachAPPF Automated Payload Processing FacilityAPPLE Advanced Propulsion Payload EffectsAPR Advanced Parts ReleaseAPS Aft Propulsion System (Subsystem)

Airbreathing Propulsion SystemAttitude Propulsion Subsystem

APSS Atmospheric Pressure Supply SubsystemAPT Astronaut Preference TestAPU Auxiliary Power UnitAQL Acceptance Quality LevelASRC Application and Resource ControlAR Acceptance Review

Acceptance Readiness

2-H

ARAP Astronaut Rescue Air PackARC Ames Research Center (Moffett Field, CA)ARCS Aft Reaction Control SubsystemARFDS Automatic Reentry Flight Dynamics SimulatorARINC Aircraft Radio, IncorporatedARN Additional Reference NumberARPESH Accurate C Reliable Prototype Earth Sensor HeadARPF Army Pulse Radiation FacilityARS Atmospheric Revitalization System

Attitude Reference SystemAir Rescue Science

ASA Aerosurface Servo AmplifierAmerican Standards Association

ASAC Aerodynamic Surface Assembly S CheckoutASAP As Soon As Possible

Aerospace Safety Advisory PanelASAS Aerodynamic Stability Augmentation SubsystemASC Aero Surface ControlASCII American Standard Code for Information InterchangeASCP Attitude Set Control PanelASCS Attutide Stabilization 6 Control System

Atmospheric Storage t Control SectionASDTIC Analog Signal to Discrete Time Interval ConverterASE Advanced Space Engine

Automatic Support EquipmentASF Atmospheric Science FacilityASG Avionics Subsystem GroupASI Airspeed Indicator

Augmented System IgnitionAmended Shipping InstructionsAugmented Spark Igniter

ASK Amplitude-Shift-KeyingASKA Automatic Systems for Kinematic AnalysisASLD Antenna Select Logic UnitASME American Society of Mechanical EngineersASP Airborne Science ProgramASPP Atmospheric S Space Plasma PhysicsASQC American Society for Quality ControlASR Avionics System Review

Air/Sea RescueASRM Abort Solid Rocket MotorASS Airlock Support SubsystemASSESS Airborne Science Shuttle Experiments System

SimulationASSY AssemblyAST AstronomyASTF Aeropropulsion System Test FacilityASTIA Armed Services Technical Information AgencyASTM American Society for Testing MaterialsATA Avionics Test Article

Air Transport AssociationAbort Time Assembly

ATC Air Traffic Control

2-5

ATC8 Active Thermal Control SubsystemATDB Aerothermodynaraic Data BookATE Automatic Test EquipmentATP Auditorium C Training FacilityATIS Automatic Terminal Information SystemATL Advanced Technology LaboratoryATLAS Abbreviated Test Language for Avionics SystemsATO Abort-To-brbitATOLL Acceptance, Test Or Launch LanguageATP Authority To Proceed

Acceptance Test ProcedureATR Air Transportation Rack

Air Transport RadioAir Transport Rating

ATS Acceptance Test SpecificationAutomatic Terminal SystemApplications Technology SatelliteAdministrative Terminal SystemAsynchronous Task Storage

ATT Acceptance Thermal TestingATO Audio Terminal UnitAU Accounting UnitAUB Aft Utility BridgeAUTODIN Automatic Digital NetworkAUTOLAND Automatic LandingAUX AuxiliaryAV Avionics

Average ValueAVE Atmospheric Variability ExperimentAVO Avoid Verbal OrdersAWI Altimeter Vertical Velocity IndicatorAVT Acceptance Vibration TestingAW Assembly WorkstandAWCS Agency-Wide Coding StructureAWG American Wire GageAWL Automated Wire ListAWS American Welding SocietyAZ Azimuth

-B-

B BitB/C Bench CheckB/L BaselineB/W Black and WhiteBA Bank AngleBAG Buffer Access Card

Booster Assembly ContractorBoeing Aircraft Company

2-6

BAI Barometric Altitude IndicatorBARS Baseline Accounting and Reporting SystemBB BreadboardBBC Before Business ClearanceBC Battery ChargerBCCT Break Control Command TransducersBCE Bus Control ElementBCP Benchmark Control Point

Base Condemnation PercentBCRD Basic Consolidated Requirements DocumentECU Bus Control UnitBOA Bermuda (STDN)BOD Baseline Definition DocumentBECO Booster Engine CutoffBER Bit Error RateBESS Biomedical Experiment Scientific SatelliteBEST Booster Exhaust Study TestBFCS Backup Flight Control SystemBFRP Boron Fiber Reinforced PlasticsBITE Built-in Test EquipmentBIU Buffer Interface UnitBLOW Booster Lift-Off HeightBMAP Buffer MapBME Bench Maintenance EquipmentBMS Background Measurement SatelliteBOD Beneficial Occupancy DateBOE Break Of EntryBOF Beginning Of FileBOI Break Of IntegrityBOM Bill Of Material

Beginning Of MonthBOPACE Boeing Plastic Analysis Capability for EnginesHOT Beginning Of TapeBOW Bill Of WorkBSP Budgetary and PlanningBP BoilerplateBPD Baseline Program DocumentBPI Bits Per InchBPS Bits Per SecondBRAVO Business Risk And Value of Operation in SpaceBRM Bio Research ModuleBRRS Banana River Repeater StationB/SC Brake Skid ControlBSI Basic Shipping InstructionsBSM Booster Separation MotorsBSRM Booster Solid Rocket Motor3TC Buss Tie ContractorBtu British Thermal UnitBU BackupBUOU Backup Optical UnitBUR Backup RateBW Bridgewire

2-7

-c-

C CandleCapacitanceCentigradeCycleCelciusHundredComplete

C-C Carbon-CarbonC-To-C Computer-To-ComputerC/D CountdownC/F Center FrequencyC/O Checkout

CutoffChangeout

C/S Counts per SecondCA Cone Angle

Cost AccountCorrective Action

CAB Civil Aeronautics BoardCost Audit Board

CACON Cargo ContainerCAD Computer Aided DesignCADE Controller/Attitude-Direct ElectronicsCADS Command And Data SimulatorCADSI Communications And Data Systems IntegrationCADU Control £ Display UnitCAL Cornell Aeronautical LaboratoryCAM Carrier Aircraft Modification

Computer Aided ManufacturingContent Addressable Memory

CAN Certification Analysis NetworkCAP Contractor Acquired Property

Cost Account PackageCAR Corrective Action Request

Certification Approval RequestCARID Customer Acceptance Review Item DispositionCARR Customer Acceptance Readiness ReviewCAS Command Augmentation SystemCASO Cancellation Addendum Sales OrderCAU Customer Acquisition Unit

Command Acquisition UnitCB Circuit Breaker

Center of BuoyancyCBIL Common £ Bulk Items ListCBR California Bearing RatioCBX C-Band TransponderCCA Contract Change AuthorizationCCAFS Cape Canaveral Air Force StationCCATS Command, Communication 6 Telemetry Subsystem

2-8

CCB Configuration Control BoardCCBD Configuration Control Board DirectiveCCC Complex Control Center

Controller Checkout ConsoleCentral Computer Complex

CCD Charge-Coupled DeviceCheckout Command Decoder

CCF Converter Compressor FacilityCCFF Cape Canaveral Forecast FacilityCCL Commonality Candidate ListCCM Controlled Carrier Modulation

Crew/Cargo ModuleCCME Contract Change Mass EstimateCCMS Command Control & Monitor System

Checkout Control S Monitor SubsystemCCN Contract Change negotiation

Contract Change NoticeCCOH Corrosive Contaminants, Oxygen C HumidityCCP Configuration Control Panel

Configuration Change PointContract Change ProposalCost Control Program

CCR Contractor Change RequestCCRA Cape Canaveral Reference AtmosphereCCS Central Control Section

Command and Communication SystemComplex Control SetComputer Core Segment

CCTV Closed Circuit TelevisionCCV Chamber Coolant ValveCCW CounterclockwiseCSD Control S DisplayC6DS Command S Data SimulatorCD Candella (luminous intensity)CDA Command 6 Data AcquisitionCDBFR Common Data BufferCDC Countdown ClockCDDT Countdown Demonstration TestCDF Cool-Down Facility

Circuit Design FabricationConfined Detonating FuseCentral Data Facility

CDFSTDS Circuit Design, Fabrication S Test Data SystemsGDI Course Deviation IndicatorCDMS Command Data Management SystemCDPIS Command Data Processing £ Instrumentation SystemCDQR Critical Design and Qualification ReviewCDR Critical Design Review

CommanderCDRR Contract Documentation Requirements RecordsCDS Control Data System

Central Data SubsystemCDSC Communications Distributing 6 Switching Center

2-9

CDT Countdown TimeCentral Daylight TimeCommand Descriptor Table

CE Civil EngineeringChange EvaluationCurrent Expendable

CEC Control Encoder CouplerCECP Compatibility Engineering Change ProposalCEI Contract End ItemCEIAC Coastal Engineering Information Analysis CenterCEQ Council on Environmental QualityCER Cost Estimating RelationshipCFE Contractor Furnished EquipmentCFI Card Format IdentifierCFM Cubic Feet per Minute

Customer Furnished MaterialCFRP Carbon Fiber Reinforced PlasticsCFSTI Clearinghouse For Scientific 6 Technical InformationCFY Company Fiscal YearCG Center of GravityCGAU Cabin Gas Analysis UnitCGC Command Guidance ComputerCGP Central Grounding PointCH ChannelCHR Cooper-Harper RatingCI Configuration Inspection

Configuration ItemCIAP Climatic Impact Assessment ProgramCIB Change Impact Board

Change Implementation BoardCIC Control and Information CenterCID Computer Interface DeviceCIDL Configuration Item Data ListCIDR Critical Intermediate Design ReviewGIF Central Instrumentation FacilityCIG Cable Integrity GroupCIL Critical Items ListCIS Central Integration Site

Change Impact SummaryCITE Cargo Integration Test EquipmentCIU Computer Interface UnitCL Closed Loop

CenterlineCLC Change Letter ControlCLIP Combined Laser Instrumentation PackageCLM Care Logic ModuleCLMC Central Logistics Management CenterCLS Contingency Landing SiteC6M Control and MonitoringCM Configuration Management

Consumables ManagementCrew Module

CMA Configuration Management Accounting

2-10

CMAO Contract Management Assistance OfficerCMAT Compatible Materials ListCMD. CommandCMC Control Moment GyroCMM Condition Monitored MaintenanceCMO Configuration Management OfficeCMOS Complimentary Metal Oxide SiliconCMR Center Materials RepresentativeCMRB Contractor Material Review BoardCMSS Communications Maintenance and StorageCMTS Computerized Maintenance Test SystemCN Change NoticeCNRL Communication ( Navigation Research LaboratoryCNWDI Critical Nuclear Weapons Design InformationCofF Cost of FacilitiesCO Change Order

Contracting OfficerC02 Carbon DioxideCOAS Coarse Optical Alignment Sight

Crew Optical Alignment SightCOB Communications Office BuildingCOC Close-Open-CloseCOFZ Checkout S Fault Isolation (On Board)COFR Certificate of Flight ReadinessCOFW Certificate of Flight WorthinessCOL Checkout LanguageCOMAS Combined Orbital Maneuvering C Abort SystemCOMM CommunicationsCOMPEN CompensatorCOMPOOL Common Data PoolCOMPR CompressorCOMRCDSAT Communication Research 6 Development SatelliteCOMSEC Communications SecurityCONN ConnectCONT ControlCONUS Continental United StatesCOR Contracting Officer RepresentativeCORE Common Operational Research EquipmentCOS Console Operating SystemCOSATI Committee On Scientific £ Technical InformationCOS! Closeout System InstallationCP Circular Pitch

Center of PressureConsole ProcessorControl Panel

CPA Critical Path AnalysisContingency Planning Aid

CPAF Cost Plus Award FeeCPC Central Planning Center

Computer Program ComponentCPCR Computer Program Change RequestCPD Crew Procedures DivisionCPDS Computer Program Design (or Development) Specification

2-11

CPE Chief Program EngineerCPEI Computer Program End ItemCPF Cargo Processing Facility

Cost Per FlightCPFF Cost Plus Fixed FeeCPG Change Planning GroupCPIF Cost Plus Incentive FeeCPH Computer Program Module

Critical Path MethodCPHP Crew Procedures Management PlanCPR Critical Problem ReportCPS Cycles Per SecondCP5E Common Payload Support EquipmentCPSS Critical Phase System SoftwareCPT Cargo Processing TechnicianCPU Central Processing UnitCQDR Critical Qualification Design ReviewCR Change RequestCRAS Cost Reduction Alternative StudyCRB Change Review BoardCRC Cost Reduction Curve

Contractor Recommended CodeCRES Corrosion Resistant SteelCRG Correspondence Review GroupCRIS Calibration Recall £ Information SystemCRN Contract Revision DumberCRPL Cosmic Ray Physics LaboratoryCRR Critical Requirements Review

Computer Run ReportCRSI Ceramic Reusable Surface InsulationCRT Cathode-Ray TubeCRYO CryogenicC/SCSC Cost/Schedule Control Systems CriteriaCS Change Status

Crew StationCore Segment

CSA Cyclic Strain AttenuatorCSAM Crinkled Single Aluminized MylarCSC Cosecant Computing Amplifier

Conical Shaped ChargeCSCSAT Commercial Synchronous Communication SatelliteCOS Chemical Systems DivisionCSDD Control Systems Development DivisionCSDL Charles Stark Draper Laboratory (MIT)CSE Common Support EquipmentCSF Cost Sensitivity FactorCSI Control Servo InputCSIR Computer Systems Integration ReviewCSIU Core Segment Interface UnitCSM Common Support ModuleCSPU Core Segment Processing Unit

2-12

CSR Crew Station ReviewCertification Status ReportCheck Signal Return

CSRP Computers 5 Software Review PanelCSS Core Segment Simulator

Computer SubsystemControl Stick Steering

CST Central Standard TimeCrew Station TrainerContract Supplemental Tooling

CCT Communication and TrackingCT Crawler TransporterCTA Controlled Thrust AssemblyCTC Chief Test Conductor

Camera, Timing & ControlCTL Control

Canoga Test LaboratoryCTM Crystalline Transitional Material

Contract Technical ManagerCTN Certification Test NetworkCTP Communications Timing ProcedureCTR Contract Technical RepresentativeCTS Communications S Tracking System

Computer Test SetCTU Central Timing UnitCUB Commonality Usage BoardCUC Computer Usage ControlCUDS Cumulative Data StatisticsCUE Common Usage EquipmentCUIL Common Usage Item ListCUM CumulativeCUP Commonality Usage ProposalCUT Coordinated Universal TimeCV Coefficient of VariationCVAS Configuration Verification Accounting SystemCVT Concept Verification TestCSW Caution and WarningCW Continuous Wave

ClockwiseCWA Clean Work AreaCWG Constant Wear GarmentCY Calendar Year

-D-

D DeltaDeliver

D/A Digital-to-AnalogD/L DownlinkDA Double Amplitude

2-13

DABS Discrete Address Beacon SystemDAC Digital-to-Analytical Conversion

Data Acquisition fi ControlDACBU Data Acquisition C Control Buffer UnitDACS Digital Acquisition S Control SystemDADS Dual Air Density SatelliteDAIS Digital Avionics Information SystemDAL Data Accession List

Data Aided LoopDAM Double Aluminized MylarDAP Digital Auto PilotDAR Data Aided Receiver

Digital Autopilot RequirementsDARTS Digital Automated Radar Tracking SystemDAS Data Analysis StationDASA Dual Aerospace Servo AmplifierDAU Data Acquisition UnitDb DecibelDB Dry Bulb

Design BaselineDistribution Box

DBC Data Bus CouplerDBPN Data Bus File NumberDBIU Data Bus Interface UnitDBRN Data Bank Release NoticeDBUR Data Bank Update RequestDBW Data Bus WireDSC Displays and ControlsDC Direct CurrentDCA Design Change AuthorizationDCAA Defense Contract Audit AgencyDCAR Design Corrective Action ReportDCAS Defense Contract Administration ServicesDCC Document Control CenterDCKNG DockingDCN Document Change Notice

Design Change NoticeDrawing Change Notice

DCOP Displays, Controls 6 Operation ProceduresDCP Data Collection Platform

Development Cost PlanDepot Condemnation Percent

DCPEI DEU Control Program End ItemOCR Design Certification Review

Document Change RecordDesign Concern Report

DECS Display £ Control SubsystemDCS Design Criteria Specification

Data Control SystemDigital Command System (Subsystem)Data Communication System

DCSP Digital Control Signal ProcessorDCU Display S Control Unit

2-1 H

DCV DC VoltsDD Directives Documentation

Associate Directorate for Design (KSC)DDA Digital Differential AnalyzerDDAS Digital Data Acquisition SystemDDSCS Dedicated Display 6 Control SubsystemDDI Discrete Digital InputODP Digital Data Processing

Design Development PlanCDS Documentation Distribution SystemDDTSE Design, Development Test £ EvaluationDDTF Dynamic Docking Test FacilityDOTS Dynamic Docking Test SystemDDU Display Driver Unit

Data Display UnitOB Design EngineeringDECL Direct Energy Conversion Laboratory (JSC)DECOM DecommunicatorDECR DecreaseDECU Data Exchange Control UnitDEE Digital Events EvaluatorDEF DefinitionDEC DegreeDEI Design Engineering IdentificationDEIS Design Engineering Inspection Simulation

Design Evaluation Inspection SimulatorDEL DeliveryDEMOD DemodulateDEMUX DemultiplexerDER Drawing Error ReportDES Design

Data Exchange SystemDESAT DesaturatedDESPOT Design Performance OptimizationDET Digital Event Timer

DetailDEU Display Electronics UnitDEV Develop, DevelopmentDEW Distant Early WarningDF Development Flight

Direction FindingAssociate Directorate for Facilities S SystemsManagement (KSC)

DFCS Digital Flight Control SoftwareDigital Flight Control System

DPI Development Flight InstrumentationDFRC Dryden Flight Research CenterDG Display GeneratorDIDS Defense Integrated Data SystemDIL Deliverable Items ListDIM Design Interface MeetingDIPEC Defense Industrial Plant Equipment CenterDISC Disconnect

2-15

DIST DistributionDIU Digital Interface UnitDL Associate Directorate for LPS Development (KSC)DLAT Destructive Lot Acceptance TestingDLSC Defense Logistics Service CenterDLTR Data Link Transmission Repeater

Data Link Terminal RepeaterDMA Direct Memory AccessDMC Direct Maintenance CostDMCF Deservicing, Maintenance S Checkout FacilityDME Distance Measuring EquipmentDMS Data Management System

Docking Mechanism SubsystemDMSS Data Management System Simulator (CVT)DN Discrepancy NoticeDNA Does Not ApplyDNP Dynamic Nuclear PolarizationDOC Document

DocumentationDOD Department Of DefenseOOP Direction Of Flight

Degree-Of-FreedomDOMSAT Domestic Communications SatelliteDOS Disk Operating SystemDOT Department Of TransportationDOT/CIAP Department Of Transportation/Climatic Impact

Assessment ProgramD6P Drain and PurgeDP Delayed Procurement

Design ProofDouble PoleDevelopment Phase

DPI Detail Program InterrelationshipsDPR Definition Phase ReviewDP6S Data Processing 5 SoftwareDPS Data Processing System (Subsystem)

Data Processing £ SoftwareDPT Design Proof TestDR Design Review

Discrepancy ReportDispatch ReliabilityDisposition Record

DRB Design Requirements BaselineDesign Review Board

DRD Data Requirements DescriptionDRI Data Rate IndicatorDRL Data Requirements ListDRM Drawing Requirements Manual

Design Reference MissionDRO Document Release OrderDRR Design Requirements ReviewDRS Data Relay Station

Digital Range Safety

2-16

DRSS Discrepancy Report Squawk SheetOS Data StorageDSA Defense Supply AgencyDSIF Deep Space Instrumentation FacilityDSN Deep Space NetworkDSPM Designated Subsystems Project ManagerDSS Deep Space Station

Department Summary ScheduleDocumentation Support Services

DST Dimensional Special ToolingDT Drop TankDTA Development Test ArticleDTC Design To CostDTCS Digital Test Command SystemDTCW Data Transfer Command WordDTI Development Test InstrumentationDTHO Design, Test 6 Mission Operations

Development, Test S Mission OperationsDTMS Digital Test Measurement SystemDTRD Development Test Requirements DocumentDTS Data Transmission System

Data Transfer SystemDU Display UnitDUM DummyDUPLX(R) Duplex(er)DVM Digital VoltmeterDVS Design Verification SpecificationDWG Drawing

-E-

E Exempt (From Traceability)Elevation Angle

E-E End-to-EndE/C Encoder CouplerE/O-IMS Engineering/Operations-Information Management SystemEAC Estimate At Completion

Energy Absorbing CapacityEAD Electrically Alterable DeviceEAFB Edwards Air Force BaseEAM Electrical Accounting MachineEAR Engineering Analysis ReportEAS Equivalent Air SpeedEAT Environmental Acceptance TestEB Electronic BeamEBW Exploding Bridge WireEC Element Contractor

Essentiality CodeECB Events Control Buffer

2-17

ECCB Engineering Change Control BoardECI Earth Centered InertiaECLS Environmental Control and Life SupportECLSS Environmental Control S Life Support SubsystemECO Engine Cutoff

Engine CombustionECP Engineering Change ProposalECR Engineering Change RequestECS Environmental Control System

Engine Control SystemECU Environmental Control UnitED Edge Distance

Engineering DirectiveEDA Electronic Display AssemblyEDB Environmental Data BookEDC Engineering Design ChangeEDCP Engineering Design Change ProposalEDDR Electron Dipole-Dipole ReservoirEDF Engineering Data FileEDLN Engineering Development Logic NetworkEDP Electronic Data ProcessingEDR Engineering Design ReviewEDS Emergency Detection SystemEOT Eastern Daylight TimeEED Electro Explosive DeviceEEE Electronic, Electrical, ElectromechanicalEFFGRO Efficient Growth (Computer Program)EETB Electronic Electrical Termination BuildingEFA Experiment Flight ApplicationsEGA Evolved Gas AnalysisEGT Exhaust Gas TemperatureEHF Extremely High FrequencyEHOT External Hydrogen/Oxygen TankEHP - Electrical HorsepowerEl Environmental Impact

End ItemEntry interface

EIA Electrical Industries AssociationEIASN End Item Assembly Sequence NumberEIC Experimental IntercomEIDP End Item Data PackageEIFA Element Interface Functional AnalysisEIRP Effective Isotropic Radiated PowerEIS End Item Specification

Electrical Integration SystemEIU Engine Interface UnitEIVT Electrical S Instrumentation Verification Tests

Electronic Installation Verification TestElectrical Interface Verification Test

EKG Electrocardiograph (Instrument)Electrocardiogram (Record)

EL Elastic LimitELACS Extended Life Attitude Control System

2-18

ELMS Elastic Loop Mobility SystemELS Earth Landing System (Subsystem)ELSC Earth Landing Sequence ControllerELT Emergency Locator TransmitterEM Engineering Module

Exception MonitorEMA • Electromagnetic AnalysisEMC Electromagnetic CompatibilityEMEC Electromagnetic Effects CapabilityEMF Electromotive ForceEMG Surface ElectromyogramsEMI Electromagnetic InterferenceEMN Engineering Management NetworkEMP Equipment Mounting PlateEMR Engine Mix RatioEMS Engineering Master Schedule

Entry Monitor SubsystemEMU Extravehicular Mobility Unit

Extended Memory UnitENC EncodeENDS- Evaluated Neutron Data FileENG EngineENGfc EngineerENG&G EngineeringENVtR EnvironmentalEO Engineering Order

Earth OrbitEOC End of Contract

Engine Order CapabilityEOD Estimated On Dock

Explosive Ordnance DisposalEOF End Of FileEOHT External Oxygen £ Hydrogen TanksEOL End Of LineEOM Engineering Operations Manual

Equations Of MotionsEOP Emergency Oxygen Pack

Earth 6 Ocean PhysicsEOR Earth Orbit RendezvousEOS Emergency Oxygen System

Earth Orbit ShuttleEarth Observation Satellite

EOT End Of TapeEPA Environmental Portection AgencyEPC Error Protection Code

External Power ContractorEPDC Electrical Power Distribution £ ControlEPG Electrical Power GeneratorEPL Emergency Power Level (Now FPL)EPMS Engineering Performance Management SystemEPO Element Project OfficeEPRft Emergency Program Release Notice

2-19

EPS Electrical Power SubsystemExperimental Power Supply

EPT Emergency Procedure TrainerEthylene Propylene Terpolymer

EPTU Events Per Time UnitEQ EquivalentER Explanation ReportERA Electrical Replaceable AssemblyERAP Earth Resources Aircraft ProgramERB Engineering Review BoardERO Engineering Release OperationsERP Effective Radiation Power

Effected Radiative PowerEyer Reference Point

ERRC Expendability/Recoverability/Repair CapabilityERS Engineering Release SystemERSI Elastomeric Reusable Surface InsulationERTS Earth Resources Technology SatelliteESA Explosive Safe Area

European Space AgencyESCA Electron Spectroscopy for Chemical AnalysisESDAC European Space Data Center (Darmstadt, Germany)ESE Electrical Support Equipment

Electronic Support EquipmentESOC European Space Operations CenterESOW Engineering Statement Of WorkESP Experiment Sensing PlatformESPS Experiment Segment £ Pallet SimulatorESR Engineering Support RequestESRIN European Space Research InstituteESRO European Space Research OrganizationESS Experiment Subsystem SimulatorESSA Environmental Sciences Services AdministrationEST Estimate

Eastern Standard TimeESTEC European Space Research £ Technology CenterESTL Electronic Systems Test LaboratoryESV Emergency Shutoff ValveET External Tank

Edge ThicknessEvent Timer

ETA Estimated Time of ArrivalETC Estimate To CompletionETCO Equipment Transfer/Change OrderETI Elasped Time IndicatorETLOW External Tank Lift-Off WeightETP Equipment Test PlanETR Eastern Test RangeETROD Eastern Test Range Operations DirectiveETS Electrical Test SetETSS External Tank Separation SubsystemEU Electronic Unit

Experimental Unit

2-20

EVA Extravehicular ActivityEarned Value Analysis

EVCON Events Control (Subsystem)EVP Equipment Visibility PileEVM Earth Viewing ModuleEVMU Extra Vehicular Mobility UnitEVS Equipment Visibility SystemEVSS Extravehicular Space SuitEWA Estimated Warehouse ArrivalEWE Emergency Window EscapeEWR Engineering Work RequestEXP ExperimentEXTER External

F Farrad (SI Unit of Capacitance)Fahrenheit

F/A Failure AnalysisF/E Full EmptyF/O Fuel/OxidizerFA Final Assembly

Failure AnalysisFully Automatic

FAA Federal Aviation AdministrationFAB FabricateFAC FacilityFACI First Article Configuration InspectionFACO Final Assembly Checkout

Factory Assembly and CheckoutFAF First Aerodynamic FlightFAIR Fabrication, Assembly 8 Inspection RecordFAL First Approach S Landing (Test)FAR Final Acceptance Review

Federal Aviation RegulationFailure Analysis Report

FAT Flight Attitude TableFAX Facsimile TransmissionFBC Fluidized-Bed CombustionFBCS Fixed Base Crew Station (SMS)FBS Firefighters Breathing SystemFBV Fuel Bleed Valve

Field Base VisitFC Fit Check

Flight ControlFlight ComputerFuel Cell

FCA Frequency Control AnalysisFCAP Flight Control Applications Program

2-21

FCC Flat Conductor CableFCCP Firm Contract Cost ProposalFCE Flight Crew Equipment

Flight Control EquipmentFCEI Facility Contractor End ItemFCF First Captive FlightFCHL Flight Control Hydraulics LaboratoryFCL Freon Coolant LoopFCO Functional CheckoutFCOS Flight Computer Operating System

Flight Control Operating SystemFCP Fuel Cell Power Plant

Firm Cost ProposalFailure Correction Panel

FCPS Fuel Cell Power SubsystemFCR Final Configuration ReviewFCRT Flight Display CRTFCS Flight Control Subsystem

Flight Crew SystemFCSM Flight Combustion Stability MonitorFCT Flight Crew TrainerFCTB Flight Crew Training BuildingFCW Format Control WordsFD Flight Director

Function DesignatorFDA Fault Detection S AnnunciationFDAI Flight Director Attitude IndicatorFOB Fahrenheit Dry BulbFDF Flight Data FileFDI Fault Detection S IsolationFDIIR Fault Detection, Isolation, Identification &

RecompensationFDM Frequency Data Multiplexer

Frequency Division MultiplexingFDD Fee Determination OfficialFDS Fluid Distribution SystemFDSC Flight Dynamics Situation ComplexFDX Full DuplexFSE Facility S EnvironmentFEA Failure Effects AnalysisFEAT Final Engineering Acceptance TestFEC Field Engineering ChangeFED Flight Events DemonstrationFEID Flight Equipment Interface Device

Functional Engineering Interface DeviceFEM Finite Element MethodFEMCPL Facilities and Environmental Measurement

Components Parts ListPEP Front End Processor

Floral Ethyl PropaneFERD Facility S Equipment Requirements DocumentFESL Failure Effects Summary ListFF Flip Flop

2-22

PFBD Functional Flow Block DiagramFFC Final Flight CertificationFFD Functional Flow DiagramFFM Free-Flying (Experiment) ModuleFFP Firmed Fixed PriceFFTO Free Flying TeleoperatorFHF First Horizontal FlightFHP Fuel High PressureFIAR Failure Investigation Action ReportFIFO First In-First Out (High Speed Data Buffers)FUG Federal Item Identification GuideFIS Facility Interface SheetsFIT Fault Isolation TestFKB Flight Display KeyboardFL Flowline

Feed LinesFLAPS Flight Application SoftwareFLC Federal Library CommitteeFLSC Flexible Linear Shape ChargeFLT FlightFM Frequency Modulation

Flight ModelFMEA Failure Modes S Effects AnalysisFMEC Forward Master Events ControllerFMECA Failure Mode, Effects and Criticality AnalysisFML Final Materials ListFMOF First Manned Orbital FlightFMR Field Modification RequestFMS Food Management SubsystemFMSP Frequency Modulation Signal ProcessorFMX FM TransmitterFND Facility Need DateFO/FS Fail-Operational/Fail-SafeFOB Free On Board

Flight Operations BuildingFOD Flight Operations Directorate (JSC)FOF First Orbital FlightFOMR Flight Operations Management RoomFOP Follow On ProductionFOPG Flight Operations Planning GroupFOPP Follow On Parts ProductionFORTRAN Formula TranslationFOSDIC Film optical Sensing Device for Input to ComputersFOV Field Of Vision

Field of ViewFirst Orbital Vehicle

FP Fuel PressureFreezing PointFunctional Path

FPB Fuel PreburnerFPBOV Fuel Preburner S Oxidizer ValveFPE Functional Program ElementFPIF Fixed Price Incentive Fee

2-23

FPL Pull Power LoadFPM Feet Per MinuteFPR Plight Performance ReservePPS Feet Per SecondFQR Plight Qualification RecorderPR Firing RoomFRb Failure Review BoardPRC Flight Research Center (now DFRC)PRCS Forward Reaction Control SubsystemPREQ FrequencyFRF Flight Readiness FiringFRR Flight Readiness ReviewPRRID Flight Readiness Review Item DispositionFRT Flight Readiness TestFS Fail-Safe

Federal SpecificationFSAA Flight Simulator for Advanced AircraftFSC Federal Stock ClassificationFSCM Federal Supply Code for ManufacturersPSI Final Systems InstallationFSIM Functional SimulatorPSK Frequency Shift KeyedPSLT First Sea Level TestFSN Federal Stock NumberPSS Flight Systems SimulatorPSSR Functional Subsystem Software RequirementsFSTE Factory Special Test EquipmentFSU Freon Servicing UnitFT Flight TestFTA Fatigue Test Article

Fault Tree AnalysisFTC Flight Test ConductorFTE Factory Test Equipment

Forced Test EndFTIS Flight Test Instrumentation SystemFTOH Plight Team Operations HandbookFTP Functional Test Program

Function Test ProgressPTR Flight Test RequirementFTRD Flight Test Requirements DocumentFUB Forward Utility BridgeFUNCT FunctionalPUO Follow-up OutputPUS FuselagePV Front ViewFVF First Vertical PlightFWB Fahrenheit Wet BulbPWD ForwardPWW Food, Water S WastePWWM Food, Water S Waste ManagementFWWMS Food, Water S Waste Management SubsystemFY Fiscal Year

2-24

-G-

G GravityG-A Ground-to-AirG-G Ground-to-GroundGSA General £ AdministrativeGA Gyro AssemblyGAC Grumman Aerospace CorporationGAIN Graphic Aids for Investigating NetworksGAM GammaGAO General Accounting OfficeGAP GOAL Automatic ProcedureGAPL Group Assembly Parts ListGATT Gate Assisted Turnoff ThyristorGBI Grand Bahama IslandGBL Government Bill of LadingG£C Guidance fi ControlGC Gigacycles (1,000 Megacycles)GCA t Ground Controlled ApproachGCDC Ground Checkout Display £ Control SystemGCHX Ground Cooling Heat ExchangerGCI ' Ground Controlled InterceptionGCN Ground Control NetworkGCO Ground CheckoutGCOS Ground Computer Operating SystemGCS Guidance Cutoff SignalGCTS Ground Communication Tracking SystemGCU Gyro Coupling Unit

Generator Control UnitGround Cooling Unit

GOBS Generalized Data Base SystemGDP Generalized Documentation ProcessorGDS Goldstone, California (STDN)GE General ElectricGEDAC General Electric Detection £ Automatic CorrectionGEN GeneratorGEOPAUSE Geodetic Satellite in Polar Geosynchronous OrbitGEOSEPS Geosynchronous Solar Electric Propulsion StageGERT Graphical Evaluation £ Review TechniquesGET Ground Elapsed TimeGETS Ground Equipment Test SetsGFSP Gases, Fluids £ PropellantsGFAE Government Furnished Aircraft EquipmentGFD Government Furnished DataGFE Government Furnished EquipmentGFM Government Furnished MaterialGFP Government Furnished PropertyGFRP Graphite Fiber Reinforced Plastics

Glass Fiber Reinforced Plastics

2-25

GFS Government Furnished SoftwareGFY Government Fiscal YearGH2 Gaseous HydrogenGHA Greenwich Hour-Angle

General Housekeeping AreaGHe Gaseous HeliumGHX Ground Heat ExchangerGIM Generalized Information Management 'GITS Ground Interface Technical GroupGIWS Ground Interface Working GroupGLAADS Gun Low Altitude Air Defense SystemGLC Generator Line ContractorGLOW Gross Lift-Off Weight

Ground Litt-Off WeightGLY GlycolGMAL General Electric Macro Assembly LanguageGMIL Spaceflight Tracking and Data Network Station (KSC)GMT Greenwich Mean TimeGSN Guidance S NavigationGN2 Gaseous NitrogenGN6C Guidance, Navigation 5 ControlGNC Guidance 5 Navigation ControlGNCIS Guidance, Navigation t Control Integration SimulatorGND GroundGND C/O Ground CheckoutGNP Gross National ProductGO General OrderGO2 Gaseous OxygenGOAL Ground Operations Aerospace LanguageGOC Ground Operations CoordinatorGOCA Ground Operations Control AreaGOMS Ground Operations Management SystemGOP Ground Operations PanelGOPG Ground Operations Planning GroupGORP Ground Operations Requirements PlanGOSS Ground Operations Support SystemGOX Gaseous Oxygen (GO2)GP General Purpose

General Publication (KSC)GPAS General Purpose Airborne SimulatorGPC General Purpose Computer

Gel Permeation ChromatographGPL General Purpose LaboratoryGPME General Purpose Mission EquipmentGPRN GOAL Test Procedure Release NoticeGPS Ground Power SupplyGPSS General Purpose Simulation System (IBM)GPTE General Purpose Test EquipmentGRE Gamma Ray ExplorerGRID Graphic Retrieval & Information DisplayGS Ground StationGSA General Services AdministrationGSCO Ground Service Cooling Unit

2-26

GSOL Ground Software Development LaboratoryGSE Ground Support EquipmentGSEL Ground Support Equipment ListGSFC Goddard Space Flight Center (Greenbelt, MD)GSI Government Source InspectionGSS Ground Support SoftwareGSVP Ground Support Verification PlanGT Ground TestGT&A Ground Test and AcceptanceGTA Ground Test ArticleGTCU Ground Thermal Conditioning UnitGTI Grand Turk IslandGUL GSE Utilization ListGVT Ground Vibration TestGVTA Ground Vibration Test ArticleGH Gross WeightGWA General Work AreaGWM Guam (STDN)GWT Ground Winds TowerGYM Guaymas, Mexico (Remote Site)GYROA Gyro A

-H-

(H) Hazardous (Task Classification)H Henry (SI Unit)H/E Heat ExchangerH/L HardlineH/S Heat ShieldH/T Heat TreatHA Hazard AnalysisHAA High Altitude AbortHAFB Holloman Air Force BaseHAK Horizontal Access KitHAL High-Order Assembly Language

Houston Aerospace LanguageHAS Holddown Alignment SupportHAST High Altitude Supersonic TargetHAW Hawaii (STDN)HE High Bay

HandbookHBW Hot Bridge WireHC Head Count

Hybrid ComputerHCMM Heat Capacity Mapping MissionHCU Hydraulic Charging UnitHDP Holddown PostHDQTRS HeadquartersHDR High Data RateHDS Hardware Description Sheet

2-27

HDWE HardwareHe HeliumHEAD High Energy Astronomy ObservatoryHEM Hatchhike Experiment ModuleHBO High Energy OrbitHEPA High Efficiency Particle AccumulatorHER HIM Equipment RackHERSCP Hazardous Exposure Reduction £ Safety Criteria Plan*HESS High Energy Squib SimulatorHF High Frequency

Horizontal FlightHFA High Frequency AccelerometerHFC Hydraulic Flight Control

Heat Flow £ ConvectionHFCT Hydraulic Flight Control TestHFCV Helium Flow Control ValveHFMU High Fidelity MockupHFT Horizontal Flight TestHFTF Horizontal Flight Test FacilityHFTS . Horizontal Flight Test SimulatorHFX High Frequency TransceiverHg MercuryHGA High Gain AntennaHGDS Hazardous Gas Detection SystemHGM Hot Gas ManifoldHGRSSPTFAC Hangar and Support FacilityHGVT Horizontal Ground Vibration TestHI Honeywell, Inc.HIM Hardware Interface ModuleHIPO Hierarchical Input-Process OutputHL Hinge Line

Heel LineHMC Hybrid MicrocircuitHMF Hypergol Maintenance Facility

Horizontal Mating FacilityHMX CycloteramethylenetrinitraimineHNS HexanitrostilbeneHO Hydrogen-OxygenHOL High Order LanguageHOS High Order SoftwareHP High PressureHPFTP High Pressure Fuel TurbopumpHPGS High Pressure Gas SystemHPI High Performance InsulationHPOP High Pressure Oxidizer PumpHPOTP High Pressure Oxidizer TurbopumpHPS Hydraulics Power SystemHPU Hydraulic Power UnitHO. HeadquartersHR Hour

Hydrogen ReliefHistorical Record

HRIR High Resolution Infrared Radiometer

2-28

HRL Horizontal Reference LineHRPS Hazard Reduction Precedence SequenceHRS HoursHRSI High Temperature Reusable Surface InsulationHRT High Resolution TrackerHS High SpeedHSCU Hydraulic Supply and Checkout UnitHSF Hypergol Servicing FacilityHSG High Sustained G2 AccelerationHSI Horizontal Situation IndicatorHSK Horizontal Sling KitHSL . Hardware Simulation LaboratoryHT Heat TransferHTG HeatingHTLL High Test Level LanguageHTPB Hydroxyl Terminated PolybutadieneHTS Heat Transport SystemHUL Hardware Utilization ListHV High VoltageHVAC Heating, Ventilating S Air ConditioningHVSF Honeywell Verification Simulation FacilityHVSL Holidays, Vacation S Sick LeaveHW Hotwire

HardwareHX Heat ExchangerHYP Hydraulics

Hydraulic SubsystemHYGL HypergolicHYPACE Hybrid Programmable Attitude Control ElectronicsHZ Hertz (cycles per second)

-I-

I IodineI/F InterfaceI/FU Interface UnitI/O Input/OutputI/T IntertankIA ' Input Axis

Implementation AgencyIssuing AgencyInverter Assembly

IAA International Aerospace AbstractsIAD Interface Agreement Document

Interface Analysis DocumentIAL Immediate Action LetterIAS Indicated Airspeed

Impact Assessment SheetIAV Inventory Adjustment Voucher

2-29

IB Inert BuildingInstruction Book

IBM International Business MachinesIBF Internally Blown FlapISC Installation & Checkout1C Intercommunications

Interim ChangeInformation CenterIntegrated CircuitIncremental Cost

ICA Item Change AnalysisICAR Investigation S Corrective Action ReportICB Interim Change Bulletin

Interrupt Control BlockICC Inter - Computer Channel

Interface Control ChartInterstate Commerce Commission

ICCP Interface Coordination and Control ProcedureICD Interface Control DocumentICDR Incremental Critical Design ReviewICDU Inertial Coupling Data UnitICE Instrumentation Communication Equipment

Instrument Checkout EquipmentICMS Indirect Cost Management SystemICMT Intercontract Material TransferICO Integrated CheckoutICR Instruction Change Request

Interface Compatibility RecordICS Interpretive Computer SimulatorICT Interface Control ToolingICWG Interface Control Working GroupID Inside Diameter

IdentificationInterface Document

IDI Instrumentation Data ItemsIDO Interdivisional OperationsIDR Intermediate Design ReviewIDRD Information Definition Requirements DocumentIDS Item Description Sheet

Interface Data SheetIDSO Interdivisional Sales OrderIDTA Interdivisional Technical AgreementIDU Interface Demonstration UnitIDWA Interdivisional Work AuthorizationIEA Integrated Electronic AssemblyIF Intermediate FrequencyIFA Interface Functional AnalysisIFB Invitation For BidIFN Inflight MaintenanceIFO Information Systems OfficeIFR Instrument Flight RulesIFTV Interim Hypersonics Test Vehicle

2-30

IG Instrument GroundInternal Guidance

IGA Inner Gimbal AngleIGDS Iodine Generating & Dispensing SystemIGM Interactive Guidance ModeIHTV Interim Hypersonics Test VehicleIHX Interloop Heat ExchangerILP Integrated Logistics PanelILS Instrument Landing System

Integrated Logistics SupportIMF Inventory Master FileIML Inside Mold LineIMPL ImplementIMS Inventory Management SystemIMU Inertial Measurement UnitIN Inches

Information Systems Directorate (KSC)INC Installation Notice CardINCL IncludeINCR IncrementIND IndicatorINIT Initial

InitiateINS Inertial Navigation SystemINSTL InstallationINSTLSC/0 Installation fi CheckoutINSTR InstrumentINSTRUM Instrumentation SubsystemINT Integrated TestingINTASAT Institute Nacional De Techica Aerospacial SatelliteINTV Interim Hypersonics Test VehicleINV MGT Inventory Management10 Industrial Operations (MSFC)IOA Input/Output AdapterIOB Input/Output BufferIOC Initial Operational Capability

Input/Output ControllerIndirect Operating Costs

IOP Input/Output ProcessorIOPL Integrated Open Problem ListIOS Instructor Operation Station

Indian Ocean Ship (Tracking)Input/Output Supervision

IOU Input/Output UnitIP Identification of Position

Intermediate PressureIntermediate Pallet

IPACS Integrated Power £ Attitude Control SystemIPAD Integrated Program for Aerospace Vehicle DesignIPB Illustrated Parts Breakdown

Illuminated Push ButtonIPC Intermittent Positive ControlIPCL Instrumentation Program £ Component List

2-31

IPE Industrial Plant EquipmentIPF IUS Processing FacilityIPL Indentured Parts List

Initial Program LoadIPR Interim Problem ReportIPS Instrumentation Power Subsystem

Inverter Power SupplyInches Per SecondInternational Pipe Standard

IPSL Interface Problem Status LogIPT International Pipe ThreadISR Interchangeability S ReplaceabilityISRS Instrumentation S Range SafetyIR Infrared

Inside RadiusIRAN Inspection S Repairs NecessaryIRD Information Requirements DocumentIRG Inertial Rate GyroIRIG Inertial Rate Integrating Gyro

Inter-Range Instrumentation GroupIRL Interface Requirement ListIRME Initiator Resistance Measuring EquipmentIRN Interface Revision NoticeIRR Integral Rocket RamjetIRTCM Integrated Real Time Contamination MonitorIRU Inertial Reference UnitIRV Isotope Reentry VehicleI£S Interchangeability and SubstitutabilityIS Installation SupportISI Initial Systems InstallationISIL Interim Support Items ListISO International Standardization OrganizationsISP Initial Specific ImpulseISPG Institutional Support Planning GroupISS Instruction Summary Sheet

Integrated System SchematicInstallation Support Services

1ST Integrated Systems TestISTA Intertank Structural Tank AssemblyISTB Integrated Subsystem Test Bed1ST Integration and TestITE Instrumentation Test EquipmentITI Inspection S Test InstructionIU Instrumentation UnitIUCS Instrumentation Unit Updata Command SystemIUS Interim Upper StageIVA Intravehicular ActivityIVAR Internal VariableIVE Interface Verification EquipmentIWBS Indirect Work Breakdown Structure

2-32

-J-

J Joule (SI Unit)J/M Jettison MotorJAN Joint Army-NavyJAS Journal of Aerospace ScienceJB Junction BoxJCL Job Control LanguageJCT JunctionJETS Joint Electronics Type (Designation) SystemJIR Job Improvement RequestJO Job OrderJOC Joint Operations CenterJOO Joint Occupancy DateJOP Joint Operating ProcedureJOR Job Order RequestJP Jet Propellant

Jet PropulsionJPIC Joint Program Integration CommitteeJPL Jet Propulsion LaboratoryJPP Joint Program PlanJSC Johnson Space Center (Formerly MSC)JSLWG Joint Spacelab Working GroupJST Joint Systems TestJURG Joint Users Requirements Group

-K-

K KiloKelvinOne Thousand

K-LBS Thousand PoundsK-SM KSC Shuttle Management (Document)K-STSM KSC STS Management (Document)K/S Kick StageKAPL Kennedy Approved Parts ListKAU Kilo Accounting UnitsKB KeyboardKBPS Kilobits Per SecondKBU Keyboard UnitKCAS Knots Calibrated AirspeedKCS Key Configuration StudiesKDN Kinetically Designed NozzleKDT Keyboard and Display UnitKHB Kennedy HandbookKHZ KilohertzKIAS Knots Indicated Airspeed

2-33

KIS Kitting Instruction SheetKMI Kennedy Management InstructionsKM Kennedy NoticeKNO Kano, Nigeria (Remote Site)KOI Kennedy Operation InstructionKOPS Thousand of Operations Per SecondKPD Kennedy Program DirectiveKPRD Kennedy Program Requirements DocumentKPS Kilometers Per SecondKSC Kennedy Space CenterKSSS KSC Station Set SpecificationKVA KilovoltampereKW KilowattKYBD Keyboard

-L-

L LeftLaunchLumenLevelLength

L/D Lift-to-Drag RatioLength to Diameter

L/O Lift-OffLA Launch Abort

LanthanumLaunch AreaLaunch AzimuthLightning Arrestor

LAAD Los Angeles Aircraft DivisionLACB Landing Aids Control BuildingLAD Los Angeles Division (Rockwell)LAGS Launch Abort Guide SimulationLARC Langley Research Center (Hampton, VA)LARS Laminar Angular Rate SensorLARSYSAA Laboratory for Application of Remote Sensing

System for Aircraft AnalysisLASCOT A Large Screen Color Television SystemLAT Latitude

LateralLot Acceptance Test

LB Low BayLoad BankPound

LBDT Low Bay Dolly TugL&C Laboratory and CheckoutLC Launch Complex

2-34

LCA Launch Control AmplifierLoad Controller Assembly

LCC Launch Control CenterLife Cycle Cost

LCCD Launch Commit Criteria DocumentLCD Launch CountdownLCG Liquid Cooled GarmentLCHTP Low Cycle High Temperature FatigueLCR Low Cross RangeLCU Line Coupling Unit

Length to DiameterLSD Landing 6 DecelerationLDB Launch Data BusLDEC Lunar Docking Events ControllerLDEF Long Duration Exposure FacilityLDS Landing, Deservicing & Sating

Landing/Deceleration SubsystemLE Launch Escape

Leading EdgeLoads

LEA Logistics Engineering AnalysisLED Light Emitting DiodeLEO Low Earth OrbitLERC Lewis Research Center (Cleveland, OH)LES Launch Escape SubsystemLESS Leading Edge Structure SubsystemLETF Launch Equipment Test FacilityLF Launch Facility

Low FrequencyLoad Factor

LFOP Landing 6 Ferry Operations PanelLG Landing GearLGA Low Gain AntennaLH Left HandLH2 Liquid HydrogenLHA Local Hour-AngleLIDAR Laser-RadarLIM LimitLIMS Logistics Inventory Management SystemLINJET Liquid Injection Electric ThrusterLIOH Lithium HydroxideLL Launch S Landing

Long LeadLow Level

LLCF Launch S Landing Computational FacilitiesLLIL Long Lead-Time Items ListLLP Launch £ Landing ProjectLM Long ModuleLMF Lower Mid FuselageLMK LandmarkLMP List of Measurement PointsLMS Load Measurement SystemLMSC Lockheed Missiles 5 Space Corporation

2-35

LN2 Liquid NitrogenLNDG LandingLNG Liquified Natural GasLO Launch OperationsLO2 Liquid OxygenLOA Landing Operations AreaLOAP List Of Applicable PublicationsLOB Line Of BalanceLOG Launch Operations ComplexLOE Level Of EffortLOGO Limit of Government ObligationLOLI Limited Operational-Life ItemsLORA Level Or Repair AnalysisLORAN Long Range NavigationLOS Line Of Sight

Loss Of SignalLift Off Simulator

LOV Limit Of VisibilityLoss Of Visibility

LOX Liquid OxygenLP Low Pressure

Launch PadLPD Launch Procedure DocumentLPDM List of Physical DimensionsLPFTP Low Pressure Fuel TurbopumpLPG Liquid Propellant GunLPLWS Launch Pad Lightning Warning SystemLPM Lines Per MinuteLPOP Low Pressure Oxidizer PumpLPOTP Low Pressure Oxidizer TurbopumpLPR Line PrinterLPS Launch Processing System

Liters Per SecondLPS/CDS LPS/Central Data SubsystemLPW Lumens Per WattLRSI ' Low Temperature Reusable Surface InsulationLRU Line-Replaceable UnitLRV Launch Readiness VerificationLSS Logistics S SupportLS Limit Switch

Life ScienceLSB Lower Side Band

Least Significant BitLSC Linear Shaped ChargeLSE Launch Support Equipment

Life Support EquipmentLSD Landing Ship DockLSID Launch Sequence and Interlock DocumentLSM Life Science ModuleLSO Large Solar ObservatoryLSR Land Sea Rescue

Launch Site RecoveryLSS Life Support Subsystem

2-36

LSSL Life Sciences Space LaboratoryLSSM Launch Site Support ManagerLS/ST Light Shield/Star TrackerLST Launch Support Team

Local Standard TimeLiquid Storage TankLarge Stellar TelescopeLarge Space Telescope

LST Laboratories 6 TestLUT Launcher-Umbilical TowerLV Launch Vehicle

Lift VectorLow Voltage

LVDC Launch Vehicle Digital ComputerLVDT Linear Voltage Differential Transformer

Linear Variable Differential TransformerLVLH Local Vertical/Local HorizontalLWG Logistics Working GroupLWR LowerLWS Lightning Warning System

-M-

M MeterMercuryMassMachMandatoryMillion

M MaintainabilityM- Time in Days Before Move OperationsM-KG Meter-KilogramM-M-L-S Model-Modes-Loads-StressesM/F Maintenance FactorM/S Measurement StimuliM/SCI Mission/Safety Critical ItemM/U MockupMA Master

Maintenance AbilityMilliamperesMultiple AccessMaterial AuthorizationMissed ApproachMike Amplifier

Ma Maintenance (STS)MAA Mathematical Association of AmericaMAAB Materials Application Advisory Board

2-37

MAB Missile Assembly BuildingMechanical Automation BreadboardMaterials Advisory Board

MAC Mean Aerodynamic ChordMaximum Allowable ConcentrationMulti-Access ComputerMaintenance Advisory CommitteeMilitary Airlitt Command

MACH MachineMACO Major Assembly CheckoutMACRO Merge S Correlate Recorded output (Program)MAO Maintenance Analysis Data

Madrid, Spain (STDN)MAP Mixed Amine Fuel

Manpower Authorization FileMichoud Assembly Facility

MAG MagneticMagnitude

MAI Machine-Aided IndexingMAIDS Management Automated Information Display System

Multipurpose Automatic Inspection S DiagnosticSystem

MAIR Manufacturing And Inspection RecordMAL Malfunction

Material Allowance ListMALL MalleableMAN Manual

Microwave Aerospace NavigationMAOT Maximum Allowable Operating TimeHASP Maintenance Analysis and PlanningMAP Missed Approach Point

Message Acceptance PulseMaintenance Analysis Program

MAPOLE Magnetic Dipole Spark TransmitterMATCO Materials Analysis, Tracking 6 Control (JSC DataMATL Material System)MAO Million Accounting UnitsMAX MaximumMAXCO Maximum Dynamic PressureMB Management BaselineMBCS , Motion Base Crew Station (SMS)MBPP Manufacturing, Build and Flow PlanMBO Management By ObjectiveMBPS Megabits Per SecondMBV Main Base VisitMfiC Maintenance S CheckoutMC Mission CapabilityMCBF Mean Cycle Between FailuresMCCC Measurement, Command and ControlMCC Main Combustion Chamber

Mission Control CenterMCC-DOD Mission Control Center - DODMCC-H Mission Control Center - Houston

2-38

MCC-K Mission Control Center - KennedyMCC-NASA Mission Control Center - NASAMCCC Mission Control and Computing CenterMCCS Mission Control Center SimulationMCDS Multifunction CRT Display SystemMCDU Multifunction CRT Display UnitMCF Maintenance fc Checkout FacilityMCIU Manipulator Controller Interface UnitMCL Master Configuration ListMCN Master Change NoticeMCO Mission Control OperationsMCOP Mission Control Operations PanelMCP Master Change Proposal

Monitoring and Control PanelMaster Computer ProgramMeasurements Control ProcedureMission Control ProgrammerMaterials Control Plan

MCR Master Change RecordMCS Maintenance S Checkout Station

Measurements Calibration SystemMCVP Materials Control and Verification ProgramMCW Modulated Continuous WaveMD Mission Director

MicrodotMaster DimensionMalfunction Detection

MDA Maintainability Design ApproachMDAC McDonnell Douglas Aircraft CorporationMDAR Malfunction Detection Analysis £ RecordingMDAS Meteorological Data Acquisition System

Mission Data Acquisition SystemMDB Mission Data BookMDC Main Display Console

Mission Director CenterMDCS Maintenance Data Collection System

Material Data Collection SystemMaster Digital Command System

MDD Mate/Demate DeviceMDE Modular Display Electronics

Mission Dependent EquipmentMission Dependent Experiment

MDF Mating/Demate FacilityMild Detonating Fuse

MDL Master Data LibraryMDM Multiplexer/DemultiplexerMDR Maintenance Demand Rate

Missing Data ReportMajor Design ReviewMinor Discrepancy RepairMission Data Reduction

MDRD Mission Data Requirements Document

2-39

MDRS Mission Data Retrieval SystemManufacturing Data Retrieval System

MDS Management Data SystemMaster Development ScheduleMission Development SimulatorMalfunction Detection SystemMinimum Discernible System

MDT Mountain Daylight TimeMeasurement Descriptor TableMean Down TimeMean Detonating Time

ME Main EngineManagement EngineeringMiscellaneous Equipment

MEA Maintenance Engineering AnalysisMain Electronics Assembly

HEAR Maintenance Engineering Analysis RequestMEAS MeasuringMEBO Main Engine BurnoutMEC Main Engine Controller

Master Event ControllerMECA Main Engine Controller AssemblyMECF Main Engine Computational FacilitiesMECH MechanicalMECO Main Engine CutoffMECR Maintenance Engineering Change RequestMED Medium

MedicalMEDICS Medical Information Computer SystemMEE Mission Essential EquipmentMEG MegohmMEI Master Inspection ItemMEL Minimum Equipment ListMELI Master Equipment List IndexMEM Module Exchange MechanismMEOP Maximum Expected Operating PressureMEP Mean Effective Pressure

Management Engineering ProgramMER Meridian

Mission Evaluation RoomMERL Materials Engineering Research LaboratoryMERSAT Meteorology and Earth Observation SatelliteMES Main Engine StartMET Mission Elapsed Time

MeteorologicalMF Medium Frequency

Mate and FerryMFA Manned Flight AwarenessMFBP Manufacturing Flow £ Building PlanMFC Multiple Flight Computer

Multiple Flight ControllerMFD Malfunction Detection

2-40

MFC ManufacturingMajor Functional Group

MFR Maximum Flight RateMultifunctional Receiver

MFT Mean Flight TimeMFTAD Master Flight Test Assignment DocumentMFV Main Fuel ValveMG Magnesium

Mobile GeneratorMGA Middle Gimble AngleMGE Maintenance Ground EquipmentMGMT ManagementMGSE Mechanical Ground Support EquipmentMGT Major Ground TestMGVT Mated Ground Vibration TestMHD Multi-Head DiscMHE Materials Handling EquipmentMHF Medium High FrequencyMHZ Megahertz (Megacycles per second)MI MileMIA Multiplex Interface AdapterMIC Management Information CenterMICIS Material Inventory Control S Inventory SystemMICOM Missile Command (Army)MICS Management Information and Control SystemMIL MilitaryMILA Merritt Island Launch AreaMIMOSA Mission Modes and Space AnalysisMIMS Medical Information Management SystemMIN Minimum

MinuteMIO Management Integration OfficeMIP Mandatory Inspection Point

Modification Instruction PackageMIPS Merritt Island Press SiteMIR Malfunction Investigation ReportMIS Management Information System

Mission Information SubsystemMISC MiscellaneousMISS MissionMIT Massachusetts Institute of Technology (CSDL)MITTS Mobile Igor Tracking Telescope SystemMIUS Modular Integrated Utility SystemsMj Mechanical JointML Mobile Launcher

Mold LineMLC Mobile Launcher ComputerMLG Main Landing GearMLGS Microwave Landing Guidance SystemMLI Multilayer InsulationMLP Mobile Launcher PlatformMLPED Mobile Launcher PedestalMLS Microwave Landing System

2-41

M6M Materials 6 MaintenanceMM Millimeter

Mass MemoryMan-MonthMain Module

MMAS Material Management Accountability SystemMMC Mission Management Center

Martin Marietta CorporationMMDB Master Measurement Data BaseMMDF Mission Model Data FileMMES MSFC Mated Element SystemsMMH Monomethyl Hydrazine

Maintenance Man-HourMML Master Measurements ListMMLS Model-Modes-Loads-StressesMMOS Multimode Optical SensorMMS Multi-Mission Modular SpacecraftMMSE Multiuse Mission Support EquipmentMMT Mass Memory TestMMU Manned Maneuvering Unit

Mass Memory UnitMO Manufacturing Order

MonthMajor ObjectiveMolybdenum

MOA Make On ArrivalMemorandum Of Agreement

MOCF Mission Operations Computational FacilitiesMOCR Mission Operations Control RoomMOCS Multichannel Ocean Color SensorMOD Modification

ModulatorModule

MODART Methods of Defeating Advanced Radar ThreatsMODEM Modulator-DemodulatorMOF Manned Orbital FlightMOPS Mission Operations Planning SystemMOR Manufacturing Operation RecordMORD Mission Operations Requirements DocumentMORT Management Oversight and Risk TreeMOS Metal Oxide Semiconductor

Metal Oxide on a SubstrateMOSPO Mobile Satellite Photometric ObservatoryMOT MotorMOU Memorandum Of UnderstandingMOV Main Oxidizer ValveMSP Material S ProcessingMP Medium Pressure

Management PackageMeasuring Point

MPAD Mission Planning and Analysis DivisionMPB Maintenance Parts BreakdownMPG Multipoint Grounding

2-42

MPHE Material £ Personnel Handling EquipmentMPIIN Modification Procurement Instrument Identification

NumberMPL Minimum Power Level

Maintenance Parts ListMechanical Parts List

MPM Manipulator Positioning MechanismMPMP Mass Properties Management PlanMPP Material Processing Procedure

Merit Promotion PlanMPR Maintainability Problem Report

Mockup Purchase RequestMPS Main Propulsion Subsystem

Master Program ScheduleMaterial Processing Specification

MPSR Mission Profile Storage £ RetrievalMPT Main Propulsion TestMPTA Main Propulsion Test ArticleMPTP Main Propulsion Test FacilityMSR Maintenance £ Refurbishment

Maintenance fi RepairMR Mixture RatioMRA Mechanical Readiness AssessmentMRB Material Review BoardMRC Measurement Requirements CommitteeMRD Mission Requirements Document

Material Review DispositionMRF Measurements/Stimuli Request Form

Maximum Retarding ForceMRIR Medium Resolution Infrared RadiometerMRL Material Requirements ListMRS Management Review SystemMS Millisecond

MilestoneMass SpectrometryMilitary Standard (Parts Designation)Margin of SafetyMaterial SpecificationMaster SwitchMachine ScrewMachine Steel

MSA Material Service AreaMinimum Surface Area

MSB Most Significant BitMSBLS Microwave Scanning Beam Landing SystemMSBLS«-GS MSBLS Ground StationMSC Manned Spacecraft Center

Materials Service CenterMaster Sequence Controller

MSDS Multispectral Scanner and Data System

2-U3

MSE Maintenance Support EquipmentMechanical Support EquipmentMedical Support EquipmentMeasuring £ Stimuli Equipment

MSF Manned Space FlightMSFC Marshall Space Flight CenterMSFN Manned Space Flight NetworkMSG MessageMSI Maintenance Significant ItemsMSL Mean Sea Level

Mechanical Systems LaboratoryMS/MS Material Science and Manufacturing in SpaceMSM Manned Support ModuleMSO Model for Spares OptimizationMSOB Manned Spacecraft Operations BuildingMSOCC Multisatellite Operations Control CenterMSOIN Minor Subcontractor or IDWA NotificationMSS Manufacturers Standardization Society

Mission Specialist StationMobile Service StructureMultispectral Scanner System

MST Mountain Standard TimeMeasurement Status Table

MSU Mass Storage UnitMeasuring Stimuli Units

MSW MicroswitchMT Magnetic Tape

MountMountain TimeMaximum TorqueMaster TimerMechanical TechnicianMaster Tool

MTA Major Test ArticleMass Thermal Analysis

MTB Materials Testing BranchMTBD Mean Time Between DemandMTBF Mean Time Between FailuresMTBM Mean Time Between MaintenanceMTBMA Mean Time Between Maintenance ActionMTBR Mean Time Between ReplacementsMTC Master Thrust ControlMTCA Monitor £ Test Control AreaMTCU Magnetic Tape Control UnitMTD MountedMTDSK Magnetic Tape DiskMTE Multi-System Test EquipmentMTF Mississippi Test Facility (Now NSTL)MTFO Modular Training Field OptionMTG MountingMTK Mechnical Time KeepingMTL MaterialMTLP Monitor Table Listing Program

2-44

MTM Methods Time MeasurementMTO Mission, Task, Objective

Modification Task OutlineMTP Master Test Plan

Mission Test PlanManufacutring Technical Procedure

MTR Mean Time to RepairMTS Magnetic Tape Station (system)MTTA Mean Time to AccomplishMTTF Mean Time to FailureMTTFF Mean Time to First FailureMTTR Mean Time to RepairMTU Magnetic Tape Unit

Master Timing UnitMobile Training Unit

MU Mobile UnitMultiple UnitMaster Unit

MUA Maximum Usable AltitudeMaterials Usage Agreement

MUF Maximum Usable FrequencyMULT MultipleMUMS Multiple Use Marc SystemMUX MultiplexerMV Manufacturing Verification

MillivoltMVA Megavolt AmpereMVAS Multipurpose Ventricular Actuating SystemMVC Master Volume Control

Manual Volume ControlMVGVT Mated Vertical Ground Vibration TestMVM Mariner Venus/MercuryMVP Master Verification PlanMW Milliwatt

MicrowaveMan Week

MWB Master Work BookMWP Maximum Working PressureMWPR Monthly Work Package ReportMWR Mean Width RatioMWV Maximum Working VoltageMX MultiplexMf Man Years

2-45

-N-

N2 NitrogenN2H4 HydrazineN2O4 Nitrogen TetroxideN/A Next AssemblyN/B Narrow BandN/C Normally ClosedN/O Normally OpenN/P Not ProvidedNA Not Applicable

Next ActionNAAL North American Aerodynamic Laboratory

(Wind Tunnel)NAC NacelleNAEC Naval Air Engineering CenterNAM National Association of ManufacturersNAP Navigation Analysis ProgramNAR Numerical Analysis ResearchNARS National Archives S Record ServiceNAS National Aircraft Standards

Naval Air StationNational Academy of Sciences

NASA National Aeronautics and Space AdministrationNASCOM NASA Communications (Network)NASTRAN NASA Structural AnalysisNATL NationalNATF Naval Air Test FacilityNAV NavigationNAVID Navigation AidNAVSAT Navigation SatelliteNB No-Bias (Relay)

Navigation BaseNitrogen BaseNiobium

NBS National Bureau of StandardsNC Numerical Control

National CoarseNo ChangeNo CommentNoise Criteria

NCC NASA Class CodeNCGS Nuclear Criteria Group SecretaryND NASA Document

NeodymiumNDE Non-Destructive EvaluationNDI Non-Destructive InspectionNOT Non-Destructive Testing

2-ae

NEC National Electrical CodeNEC NegativeNESC National Electrical Safety CodeNET NetworkNFPA National Fire Prevention AssociationNSG Navigation 6 Guidance (GSN is preferred)NG Narrow GageNH3 AmmoniaNHH HydrazineNHA Next Higher AssemblyNHB NASA HandbookNI NickelNIB Non-interference BasisNIC Not In ContractNICO Nickel CadmiumNIL No LimitNIP NippleNI-SIL Nickle-SilverNJP Network Job ProcessingNL No LimitNL6 Nose Landing GearNM Nautical Miles

Non MetalicNMAB National Materials Advisory BoardNMI NASA Management InstructionNMO Normal Manual OperationNMR Nuclear Magnetic ResonanceNMT Notification of Master ToolNOAA National Oceanic S Atmospheric AdministrationNOC Network Operation Control

Notation Of ContentNOCC Network Operations Control CenterNOES National Operational Environmental Satellite

ServicesNOR NormalNORAD North American Air Defense CommandNOZ NozzleNP Network Program

NeptuniumNPC NASA Publication ControlNPD NASA Policy DirectiveNPL Normal Power Level (see RPL)NPS NASA Planning StudiesNPSH Net Positive Suction HeadNPSP Net Positive Suction Pressure

Net Positive Static PressureNPV Nitrogen Pressure ValveNR Not Required

Noise RatingNRC Non-Recurring CostsNRI Non-Recurring InvestmentNRM Non-Recurring MaintenanceNRP Normal Rated Power

2-47

NRS Nonconformance Reporting SystemNRT Near Real TimeNRTS Not Repairable at This StationNRZ Non-Return-To-ZeroNS Nuclear Shuttle

Nickel SteelNSA National Standards AssociationNSI-I NASA Standard Initiator - Type I (Was SMSI)NSN National Stock NumberNSO NASA Support OperationNSP NASA Support Plan

Network Signal ProcessorNSR National Slow RateNSTL National Space Technology Laboratory (Was MTF)NTO Nitrogen TetroxideNTP Normal Temperature t Pressure

Notice To ProceedNetwork Test Panel

NTS Not To ScaleNTSO NASA Test Support OfficeNUL Non-GSE Utilization ListNVR No Verification Required

Nonvolatile ResidueNo Voltage Release

NW NASA WaiverNetwork

NWS Nose Wheel SteeringNWSI New World Services Inc.NWT Nonwatertight

-O-

02 Gaseous OxygenO/D On DockO/ET Orbiter/External TankO/F Oxidizer-To-Fuel RatioO/L OverloadO/L-RC Overload-Reverse Current0/R Outside RadiusO/V OvervoltageOA Orbital Assembly

Output AxisOffice of Applications

OAA Orbiter Access ArmOAFTO Orbiter Atmospheric Flight Test OfficeOAL Overall LevelOAS Orbiter Aeroflight Simulator

Orbiter Avionics SystemOASIS Oceanic S Atmospheric Scientific Information System

2-18

OASPL Overall Sound Pressure LevelOAST Office of Aeronautics and Space TechnologyOAT Overall Test

Operational Acceptance TestOB On Board

Operational BaseOBC On Board ComputerOBCO On Board Checkout (Instrumentation)OBCS On Board Checkout SubsystemOBV Oxidizer Bleed ValveO6C Operations S Checkout (Building - Was MSOB)OC On-Condition

On CenterOpen CircuitOvercurrent

OCC Office of Contract ComplianceOperations Control Center

OCDR Orbiter Critical Design ReviewOCDU Optics Coupling Data Unit (GSN)OCP Orbiter Computational Facilities

Onboard Computational FacilityOCH Orbiter Common Hardware'OCN Order Control NumberOCO Open-Close-OpenOCP Output Control PulseOCR Optical Character RecognitionOCT OctalOD Outside Diameter

Operations DirectiveODB Operational Data BookODCDR Orbiter Delta CDRODES Optical Discrimination Evaluation StudyODIN Orbital Design Integration SystemODRAN Operational Drawing Revision Advance NoticeODU Output Display UnitOEAS Orbital Emergency Arresting SystemOECO Outboard Engine CutoffOEM Original Equipment ManufacturerOES Orbiter Emergency SiteOESS Orbiter/ET Separation Subsystem06FS Operations 6 Flight SupportOF Oxygen Fill

Outside FaceOFCC Office of Federal Contract ComplianceOFDS Orbiter Flight Dynamics Simulator

Oxygen Fluid Distribution SystemOFI Operational Flight InstrumentationOFK Official Flight KitOFF Orbiter Flight Program

Operational Flight ProgramOFT Orbital Flight TestOFTR Orbital Flight Test Requirement

2-U9

OG Outer Gimbal (Roll)Oxygen Gage

OGA Outer Gimbal AngleOGE Operating Ground EquipmentOGV Oxygen Gage ValveOH Overhaul

OverheadOHA Operational Hazard AnalysisOHGVT Orbital Horizontal Ground Vibration Test01 Operational Instrumentation

Orbiter InstrumentationOIA Orbiter Interface Adaptor

Office of International AffairsOIR Operations Integration ReviewOIS Operational Intercommunication SystemOISR Open Item Status ReportOIT Orbiter Integrated TestOJT On the Job TrainingOL Open LoopOLF Orbiter Landing FacilityOLJP Orbiter Landing Instrumentation FacilitiesOLOW Orbiter Lift-Off WeightOLSA Orbiter /LPS Signal AdapterOLSP Orbiter Logistics Support PlanOGM Operation £ MaintenanceOM Outer Marker (ILS)

Optical MasterOMB Office of Management and BudgetOMBUU Orbiter Midbody Umbilical UnitOMCF Operations £ Maintenance Control FileOMD Operations & Maintenance DocumentationOMDR Operations £ Maintenance Data RecordOME Orbital Maneuvering Engine

Orbiter Main EngineOMI Operations £ Maintenance InstructionOML Orbiter Mold Line

Outside Mold LineOMMH Orbiter Maintenance Man-HoursOMNI Omni-Range

OmnidirectionalOMP Operations £ Maintenance PlanOMPR Operational Maintainability Problem ReportingOMPT Observed Mass Point TrajectoryOMR Orbiter Management Review

Operations S Maintenance RequirementsOMRB Operating Material Review BoardOMR/P Operations £ Maintenance Requirements/PlanOMRS Operations £ Maintenance Requirements SpecificationsOMRSD Operations £ Maintenance Requirements and

Specification DocumentationOMS Orbital Maneuvering SubsystemOMU Optical Measuring UnitOMV Oxygen Manual Valve

2-50

OND Operator Need DateONR Office of Naval ResearchOOD Orbiter-On-DockOOMM Organizational Operations S Maintenance ManualDOS Orbit-to-Orbit Shuttle

Orbit-to-Orbit StageOn-Orbit Station

OOT Out of ToleranceOP Oxygen Purge,OPB Oxidizer PreburnerOPBOV Oxidizer Preburner Oxidizer ValveOPE Other Project ElementOPER Operational, Operate, OperatorOPF Orbiter Processing FacilityOPGUID Optimum Guidance (Technique)OPIS Orbiter Prime Item SpecificationOPL Open Problem ListOPNS OperationsOPPAR Orbiter Project Parts Authorization RequestOPPL Orbiter Project Parts ListOPR Office of Primary Responsibility

Operations Planning ReviewOPS Orbiter Project Schedules

Oxygen Purge SystemOPT Optics

OptimumOSR Overhaul £ RepairOR Outside Radius

Oxygen ReliefORB OrbiterORCHIS Oak Ridge Computerized Hierarchical Information

SystemsORD Ordnance

Operational Ready DataOperational Readiness Date

ORF OrificeORI Operational Readiness InspectionORLA Optimum Repair Level AnalysisORR Operations Requirements Review

Operational Readiness ReviewOrroval Valley, Australia (STDN)

ORSDI Oak Ridge Selective Dissemination of InformationORT Orbit Readiness TestOS Orbiter CEI Specification

Operating SystemOSA Operational Support AreaOSC OscillatorOSDH Orbiter System Definition HandbookOSE Operating Support Equipment

Orbiter Support EquipmentOSF Office of Space Flight (NASA HQ)

Ordnance Storage FacilityOSHA Occupational Safety and Health Administration

2-51

OSO Ocean Systems OperationOSOP Orbiter Systems Operating ProceduresOSS Office of Space Sciences

Optics SubsystemsOrbiting Space StationOrbit-to-Orbit Stage

OSSRH Orbiter Subsystem Requirements HandbookOST Orbiter Support TrolleyOSTP Orbiting System Test PlanOT Operating Time

Operational TrajectoryOvertime

OTA Optical Telescope AssemblyOTB Orbiting Tanker BaseOTC Orbiter Test ConductorOTD Operational Technical DocumentationOTDA Office of Tracking and Data AcquisitionOTH Over-The-Horizon (Radar)OTL Ordnance Test LaboratoryOTLC Orbiter Timeline ConstraintsOTO One-Time-OnlyDTP Operations Turnaround PlanOTR Operating Time Record

OuterOTS Off-The-ShelfOTV ' Operational TelevisionOUT Output

OutletOrbiter Utilities Tray

OUTBD Outboard0V Orbiter Vehicle

Oxygen VentOVBD OverboardOVCS Operational Voice Communication OfficeOVF OverfillOVPL OverflowOVHD OverheadOVHT OverheatOVLD OverloadOVRD OverrideOW OvervoltageOW Optical WindowOWF Optimum Working FrequencyOXD OxideOXID OxidizerOXY OxygenOZ Ounce

Ozone

2-52

-p-

P Pallet (Spacelab)PeriodPitchPolePrimary

P-P Peak-to-Peak (Value)P/A Problem AnalysisP/B PushbuttonP/C Pitch ControlP/L Parts List

PayloadP/N Part NumberP/P Patch PanelP/PL Primary PayloadPA Pad Abort

Power AmplifierPulse AmplifierProduct Assurance

PAC Problem Action CenterPACC Problem Action Control CenterPACS Pointing S Attitude Control SystemPAD Program Approval DocumentPAE Preventive Action Engineer

Problem Assessment EngineeringPAF Peak Annual FundingPAFB Patrick Air Force BasePAH Payload Accommodations HandbookPALS Precision Approach S Landing System

Photo Area and Location SystemPAH Pulse Amplifier ModulationPAO Public Affairs OfficePAP Product Assurance PlanPAR Precision Approach Radar

Problem Accountability RecordProblem Action RecordProblem Action RequestProduct Acceptance Review

PARA ParagraphPARS Property Accountability Record SystemPAS Payload Accommodation StudiesPASS Planning And Scheduling SystemPAT Problem Action TeamPATP Preliminary Authority To ProceedPATS Program for Analysis of Time SeriesPAV Pressure Actuated ValvePAX Passengers

2-53

PB PlaybackPhonetically BalancedPreburner

PBAN Polybutadiene Acrylonitrile (Propellant)PBD Payload Bay DoorPBDM Payload Bay Door MechanismPBIC Programmable Buffer Interface CardPBK Payload Bay KitPBM Program Business ManagementPBPS Post-Boost Propulsion SystemsPBW Proportional Band WidthPC Project Control

Pulsating CurrentPCA Pneumatic Control Assembly

Power Control AssemblyPoint of Closest Approach

PCB Product Configuration BaselinePrinted Circuit BoardPower Circuit BreakerPower Control Box

PCC Pad Control CenterPayload Control 5 Checkout

PCCB Program Configuration Control BoardPCCM Program Change Control ManagementPCCN Provisioning Contract Control NumberPCCP Preliminary Contract Change ProposalPCDU Payload Command Decoder UnitPCI Program Control InputPCIL Pilot-Controlled Instrument LandingPCIN Program Change Identification NumberPCL Primary Coolant Loop

Programming Check ListPCM Pulse Code Modulation

Punch Card MachinePCMMO Pulse Code Modulation Master UnitPCN Program Control NumberPCO Post-Checkout Operations

Procuring Contracting OfficerProgram Controlled Output

PCP • Project Cost PlanPCR Publication Change Request

Payload Changeout RoomProject Control Room

PCS Payload Checkout SystemPower Conversion SystemPermanent Change of Station

PCTE Portable Commercial Test EquipmentPCTO Payload Cost Tradeoff Optimizationpcu Power Control Unit

Pressure Control UnitProcess Control Unit

PCV Pre-Check VerificationPurge Control Valve

2-5*

PCVBPCVLPD

PDSRSPDAPDARPDB

PDCPDCSPDIPDLPDM

PDM/FMPOP

PDR

PDRDPDRLPDRMPDS

PDU

PEPEPOPEIRPEMPERPERTPETAPETNPF

PFBPFC

PPL

Pyro Continuity Verification BoxPilot Controlled Visual LandingProgram DirectivePreliminary DesignProject DirectivePayload Deployment S Retrieval SubsystemPropellant Drain AreaProgram Description And RequirementsPerformance Data BookPower Distribution BoxProcurement Document ChangePower Distribution and Control SubsystemPayload Data InterleaverProgram Design LanguagePulse Duration ModulationProcessor Data MonitorPulse Duration Modulation/Frequency ModulationProgram Development PlanPreliminary Definition PlanProcurement Data PackageProject Definition PhaseProgram Director's ReviewPreliminary Design ReviewPreliminary Data RequirementsProcessed Data RecorderProcurement Data Requirements DocumentProcurement Data Requirements ListPayload Deployment 6 Retrieval MechanismPower Distribution SubsystemPackage Data SystemPartitioned Data SetPressure Distribution UnitPulse Detection UnitProject EngineerPayload Effects Follow-on StudyProject Equipment Inspection RecordPlant Engineering and MaintenancePreliminary Engineering ReportProgram Evaluation Review TechniquePerformance Evaluation 5 Trend AnalysisPetaerythrite TetranitrateProbability of FailureParachute FacilityPowered FlightPower FactorPreflightPulse FrequencyPrime FunctionPressure Fed BoosterPreliminary Flight CertificationPerformance Flight CertificationPrimary Freon Loop

2-55

PPM Pulse Frequency ModulationPlatform

PFP Program Financial PlanProgrammable Function Panel

PFRT Preliminary Flight Rating TestPG Pressure GagePGA Pressure Garment Assembly

Power Generating AssemblyPGE PurgePGNCS Primary GSN and Control SystemPGOR Payload Ground Operation RequirementsPGS Power Generation SubsystemPH Hydrogen Ion Concentration

PhasePHA Preliminary Hazard AnalysesPHF Personal Hygiene FacilityPSI Performance S Interface (Specification)PI Procurement Item

Preliminary InvestigationProgram Introduction

PIA Pre-Installation AcceptancePIB Pyrotechnic Installation BuildingPIC Pyro Initiator Controller

Pyro Initiator CapacitorsProgrammable Interval ClockPre-Installation Checkout

PICP Program Interface Control PlanPICRS Program Information Coordination S Review Service

Program Information Control 5 Retrieval SystemPICS Photo Index and Cataloguing SystemPID Program Introduction DocumentPIOA Payload Installation S Deployment AidPIDS Portable Image Display SystemPIF Payload Integration FacilityPICA Pendulous Integrating Gyro AccelerometerPII Procurement Instrument IdentificationPUN Procurement Instrument Identification NumberPIM Pulse Interval ModulationPIND Particle Impact Noise DetectionPIO Pilot-Induced Oscillation

Public Information OfficePIP Plant Instrumentation Program

Production Instrumentation PackagePayload Interface Plan

PIPA Pulse Integrating Pendulum AccelerometersPulse Integrating Pendulum Assembly

PIRN Preliminary Interface Revision NoticePIT Pre-Installation TestPITG Payload Integration Task GroupPK Peak (Value)PKD Programmable Keyboard G Display

2-56

PL PrelaunchPlugPlatePost Landing

PLACE Position Location Aircraft CommunicationsEquipment

PLBK PlaybackPLH Payload HandlingPLISN Provisioning List Item Sequence NumberPLL Phase Locked LoopPLM Payload Management

Payload MonitoringPLMS Program Logistics Master SchedulePLN Program Logic NetworkPLS Post Landing S Safing

Propellant Loading SystemPLSL Propellants 6 Life Support LaboratoryPLSS Portable Life Support Subsystem °PLT Production Lead TimePLTS Precision Laser Tracking SystemP6M Processes £ MaterialsPM Performance Monitor

Pulse ModulationPhase ModulationPlanetary MissionProgram MilestonePreventive MaintenanceProject Manager

PMAT Page Map Address TablePMC Procurement Method Code

Post Manufacturing CheckoutPayload Monitoring 6 ControlPlutonia-Molybdenum Cermet

PMDL Palmdale, CaliforniaPMF Performance Monitor FunctionPMHL Preferred Measurement Hardware ListPMI Preventive Maintenance Inspection

Principal Maintenance InspectorPMIR Program Manager's Integration ReviewPML Preliminary Materials ListPMN Program Management NetworkPMOM Performance Management Operations ManualPMON Performance Management Operations NetworkPMP Program Management Plan

Performance Management PackagePre-Modulation ProcessorParts, Materials S Processes

PMPL Preferred Mechanical Parts ListPMR Program Manager's Review

Performance Measurement ReportPMS Performance Management System

Performance Monitoring SystemPerformance Measurement System

2-57

PMT Production Monitoring TestPMU Pressure Measuring UnitPN Part NumberPNEU PneumaticPNL PanelPO Post Orbit

Purchase OrderPDA Plan Of ActionPOC Payload Operations Center

Purchase Order CloseoutPOCC Payload Operations Control CenterPOCN Purchase Order Change NoticePOGO Polar Orbiting Geophysical ObservatoryPOL Petroleum; Oil S LubricantsPOLAR Production Order Location And ReportingPOM Pallet Only Mode

Printer Output MicrofilmPOP " Program Operating Plan

Prelaunch Operations PlanPerpendicular to Orbit Plane

POR Purchase Order RequestPORB Production Operations Review BoardPORCN Production Order Records Change NoticePORO Performance and Operations Requirements DocumentPORR Preliminary Operations Requirements ReviewPORT PortablePOS Positive

Pacific Ocean ShipPortable Oxygen System

POST Program to Optimize Simulated TrajectoriesPOT PotentiometerPOV Peak Operating Voltage

Pneumatic Operated ValuePOWS Project Operating Work StatementPP Push-Pull

Partial PressurePlanning PackagePush-Pull

PPB Parts Per BillionProgram Performance Baseline

PPC Phased Provisioning CodePreprocessing Center

PPEC Plasma Physics S Environmental PerturbationPPF Payload Processing Facility (USAF)PPL Priced Parts List

Provisioning Parts ListPPM Parts Per Million

Pulse Position ModulationPulse Per Minute

PPME Pacific Plate Motion ExperimentPPS Pulses Per Second

Pneumatic Power SubsystemProvisioning Performance Schedule

2-58

P6R Performance and ResourcesPR Purchase Request

Procurement RegulationPressure RegulatorPerformance ReportPosition Record

PRB Panel Review BoardParachute Refurbishment Building

PRC Planning Research CorporationPRCA Problem Reporting and Corrective ActionPRCB Program Requirements Control BoardPRCBD Program Requirements Control Board DirectivePRO Procurement Requirements Document

Procurement Regulation DirectiveProgram Requirements Document (UDS)

PRE Personal Rescue EnclosurePRESS PressurePRP Pulse Repetition FrequencyPRI PrimaryPRL Page Revision LogPRM Payload Retention MechanismPRN Program Release Notice

Pseudo Random NoisePROG ProgramPROJ ProjectPROM Programmable Read-Only MemoryPROP Propulsion

PropellantPRPS Programming Requirements Process SpecificationPRR Program Requirements Review

Preliminary Requirements ReviewParts Replacement RequestPulse Repetition Rate

PRS Power Reactant SubsystemPayload Retention SubsystemPersonnel Rescue SystemPrimary Recovery SiteProvisioning Requirements Statement

PRSD Power Reactant Storage and DistributionPower Reactant Supply and Distribution

PRSS Problem Report Squawk SheetPSSM Procurement 5 Subcontract ManagementPS Payload Support

Pressure SwitchParachute SubsystemPower Supply

PSA Payload Service AreaPower Servo AssemblyPower Servo AmplifierPressure Switch Assembly

PSAC Presidential Scientific Advisory CommitteePSC Program Schedule ChartPSCN Preliminary Specification Change Notice

2-59

PSDPSDRPSEPSFPS IPSIAPSIDPSIGPSISPSKPSLPCSMPSM

PSP

PSPLPSRDPSS

PSSTPSVPT

PTA

PTC

PTCRPTCS

PTDPTDDSS

PTIPTMFTPPTR

PTSPTTPO

PUBPUGSPUVPV6DPVA

Power Spectral DensityPlanning and Scheduling Document RecordPeculiar Support EquipmentProcessing and Storage FacilityPounds Per Square Inch

InchInchInchInch

(Static Pressure)(Absolute Pressure)(Differential Pressure)(Gage Pressure)(Sealed)

Pounds Per SquarePounds Per SquarePounds Per SquarePounds Per SquarePhase Shift KeyedPressure SealProcurement £ Subcontract ManagementPropellant Storage ModulePyro Substitute MonitorProgram Support PlanPayload Signal ProcessorPriced Spare Parts ListProgram Support Requirements DocumentPayload Specialist StationPropulsion Support SystemPropellant Supply SubsystemPad Safety SupervisorPeriodic Significant Scheduled TasksPlanetary Space VehiclePintPointPressure TransducerPropulsion Test ArticlePost Test AnalysisPassive Thermal ControlPortable Temperature ControllerPad Terminal Connection RoomPropellant Tanking Computer SystemPassive Thermal Control SectionProvisioning Technical DocumentationProvisioning Technical Documentation Data SelectionSheet

Total PressurePulse Time ModulationPoint-To-Point PhonesProgram Trouble ReportPreliminary Test ReportPrinterPayload Test SetPush-Tp-TalkPropellant UtilizationPower UnitPickupPublicationPropellant Utilization C Gauging SystemPropellant Utilization ValvePurge, Vent and DrainPreburner Valve Actuator

2-60

PVR Precision Voltage ReferencePVRO Purge, Vent, Repressurize, and DrainPVT Pressure, Volume and Temperature

Pyrotechnic Verification TestPVHA Planned Value of Work AccomplishedPVHS Planned Value of Work ScheduledPW Pulse WidthPWA Product Work Authorization

Private Write AreaPWB Printed Wire BoardPWBS Program Work Breakdown StructurePWM Pulse-Width ModulationPWHD Printed Wiring Master DrawingPWR PowerPWS Pricing Work StatementPy Program YearPYRO Pyrotechnics

-Q-

Q Dynamic PressureQA Quality AssuranceQACAD Quality Assurance Corrective Action DocumentQAM Quality Assurance ManualQAP Quality Assurance ProcedureQAVT Qualification Acceptance Vibration TestQC Quality ControlQCDR Quality Control Deficiency ReportQCOP Quality Control Operating ProcedureQD Quick DisconnectQDS Quality Data SystemQE Quality EngineerQEC Quick Engine ChangeQGS Quantity Gauging SystemQLDS Quick Look Data StationQPL Qualified Parts List

Qualified Products ListQPR Quarterly Progress ReportQPRD Quality Planning Requirements DocumentQPS Quality Planning SpecificationQRE Quick Reaction EstimateQRI Quick-Reaction IntegrationQRIA Quick-Reaction Integration ActivityQRS Quick-Reaction SortieQRSL Quick-Reaction Space LaboratoryQSA Qualification Site ApprovalQSL Qualified Source ListQSS Quindar Scanning SystemQT Qualification Test

2-61

QTP Qualification Test PlanQTR Qualification Test ReportQTy QuantityQUAD Quadrangle, Quadrant, QuadratureQUADS Quality Achievement Data SystemQUAL Qualification, QualifiedQUI Quito, Ecuador (STDN)QUIC Quality Data Information and ControlQUP Quality Unit PackQVT Qualified Verification TestingQWT Qualified Verification Vibration Testing

-R-

R ReliabilityRoentgen ' .RatioRightRangeRankineGas ConstantReplaceReceive

R-T Resistance TestR/A Radar AltimeterR/I Receiving InspectionR/L Remote/LocalR/T Receiver/TransmitterR/W RunwayRAC Reliability Action CenterRACS Remote Automatic Calibration SystemRAD Radiation Dosage

Radius, RadianRADAR Radio Detection And RangingRAF Requirements Analysis FormRAG Reusable AgenaRAI Roll Attitude IndicatorRAL Responsibility Assignment ListRALPH Reduction S Acquisition of Lunar Pulse HeightsRALT Radar AltimeterRAM Responsibility Assignment Matrix

Random Access MemoryRadar Absorbtion Material

RAMA Recap And Movement AuthorizationRANG Radar Absorbtion Noise S ClutterRANN Research Applied to National NeedsRAPCON Radar Approach and ControlRAS Requirements Allocation SheetRATCC Radar Air Traffic Control Center

2-62

RAU Remote Acquisition UnitRegional Acquisition Unit

RAUIS Remote Acquistion Unit Interconnecting StationRAX Remote Access Computing System

Remote Access TerminalRBC Rotating Beam CeilometerRBMT Retrospective Bibliographies on Magnetic TapeRBN Radio BeaconRSCC Recorder S Communication ControlRC Resistance-Capacitance

Range CommandRotation ControlRecurring Cost

RCC Reinforcer Carbon-CarbonRCCB Remote Control Circuit BreakerRCCP Recorder and Communications Control PanelRCDR RecorderRCPT ReceptacleRCN Requirements Change NoticeRCR Retrofit Configuration RecordRCS Reaction Control SubsystemRCSC Reaction Control Subsystem ControllerRCVR ReceiverRCVY RecoveryRED Research and DevelopmentRSDO Research and Development Operations (MSFC)RD Requirements Document

Reference DesignatorRDA Remote Data Access

Resident Data AreaRDC Request for Document Change

Reference Designator CodeRDD Requirements Definition DocumentRDF Radio Direction FinderRDOC Reference Designation Overflow CodeRDP Requirements Development PlanRDR Raw Data RecorderRDS Rocketdyne Digital SimulatorRDTSE Research, Development, Test and EvaluationRDX CyclotrimethylenetrinitramineRE Responsible EngineerREC RecordRECP Request for Engineering Change ProposalRECS Representative Shuttle Environmental Control SystemRECT RecifierREF Reference

RefurbishmentREG Regulator (Regulate)REI Runway End IdentificationREIL Runway End Identification LightsREI-M REI-MolliteREJ RejectREL Release

2-63

KEM RemoveRoentgen Equivalent Man

RE PL ReplaceREQ Request

RequireREQMT RequirementRESVR ReservoirREST Research Engineering & TestRETS Reconfigurable Electrical Test StandREV Reverse

ReviewRevisionRevolution

RF Radio FrequencyRFA Request For Action

RF Authorization (Frequency)RFB Request For Bid

Ready For BaselineRFC Request For Change

Radio Frequency ChartsRFCP Request For Computer ProgramRFD Requirements Formulation DocumentRFE Request For EstimateRFEI Request For Engineering InformationRFI Radio Frequency Interference

Request For InformationRemote Facility InquiryRemote File Inquiry

RFP Request For ProposalRFPA Request For Proposal AuthorizationRFQ Request For QuotationRFW Request For Waiver (Deviation)RGA Rate Gyro AssemblyRGP Rate Gyro PackageRH Relative Humidity

Right HandRHC Rotation Hand ControllerRHCP Right, Hand Circular PolarizationRHEB Right Hand Equipment BayRHL Residual Hazards ListRHS Rocketdyne Hybrid SimulatorRHT Radiant Heat TemperatureRHU Radioisotope Heater UnitRI Rockwell InternationalRIB Recoverable Item BreakdownRIC Rockwell International Corporation

Resistance Inductance and CapacitanceRID Review Item DispositionRIDI Receiving Inspection Detail InstructionRIF Relative Importance FactorRIG Rate Integrating GyroRIGI Receiving Inspection General Instruction

2-64

RIL Recoverable Item ListRepairable Item ListReparable Item List

RIR Reportable Item ReportRIS Reporting Identification SymbolsRISKAC Risk AcceptanceRIT Request tor Interface ToolRIU Remote Interface UnitRJC Reaction Jet ControlRJD Reaction Jet DeviceRJDA Reaction Jet Driver-AftRJDF Reaction Jet Driver-FwdRJ/EC Reaction Jet/Engine ControlRJOD Reaction Jet QMS DriverRLEO Request Laison Engineering OrderRM Rescue Module

Reference MissionRemote Manipulator

RMS Remote Manipulator SubsystemRoot Mean SquareRadian Means Per SecondRandom Motion Simulator

ROC Record Of CommentsRequest Of Change

ROM Rough Order of MagnitudeRead-Only Memory

ROT RotateRemaining Operating Time

RSP Reserve and ProcessRSPM Research 6 Program ManagementRP Repair Period

Rocket PropellantRelative Pressure

RPA Request for Procurement Action (Authorization)RPC Remote Power ControllerRPE Reliability Project EngineerRPIE Real Property Installed EquipmentRPL Rated Power LevelRPM Revolutions Per MinuteRPO Radiation Protection OfficerRPP Reinforced Pyrolytic PlasticRPS Revolutions Per Second

Record and Playback SubsystemRPT Resident Provisioning TeamRPTA Rudder Pedal Transducer AssemblyRPV Remotely Controlled VehicleRCQA Reliabilty fi Quality AssuranceRQMTS RequirementsRSR Remove fi ReplaceRR Requirements Review

Rendezvous RadarRRL Rudder Reference LineRRP Rudder Reference Plane

2-65

RRT Rendezvous Radar TransponderRS Rawinsonde

Refurbishment SpareRight Side

RSD Requirements S Specifications DocumentRSF Refurbish C Subassemblies FacilitiesRSI Reusable Surface InsulatorRSO Radiological Safety OfficeRSPL Recommended Spare Parts ListRS6S Receiving, Shipping S StorageRSS Root Sum Square

Reactants Supply SystemRange Safety System

RSSPO Resident Space Shuttle Project OfficeRSU Remote Service UnitRT Reference Trajectory

Real TimeRTAC Research S Technology Advisory CommitteeRTB Resistance Temperature BulbRTC Real-Time CommandRTCC Real-Time Computer Center (NASA)

Real-Time Computer Command (Uplink)RTCE Rotation/Translation Control ElectronicsRTCP Real-Time Communications ProcessorRTCS Real-Time Computer SystemRTD Resistance Temperature DeviceRTE Responsible Test EngineerRTG • Radioisotope Thermal GenerationRTHC Rotation-Translation Hand ControllerRTHS Real-Time Hybrid SystemRTLS Return To Launch SiteRTS Remote Tracking StationRTV Room-Temperature VulcanizedRUPT Interrupt

RuptureRV Reentry Vehicle

Recovery VehicleRelief Valve

RVCF Remote Vehicle Chepkout FacilityRVDT Rotary Variable Differential Transducer

Rotary Variable Differential TransformerRVN Requirements Verification NetworkRVR Runway Visual RangeRYD Real Year DollarsRZ Return-to-Zero

2-66

-s-

S SecondSideStere

S* Second (Astronomical Tables)(S) Safe (Task Classification)S-BD S-BandS-N Stress NumberS/A Site Activation

SubassemblySpacecraft AdapterSafe and ArmScheduled/Actual

S/AC Stabilization/Attitude ControlS/C Spacecraft

Software ContractorSubcontractorStripchart (Recorder)

S/F Safety FactorS/G Strain GageS/L Shops £ LabsS/M Service/MaintenanceS/N Serial Number

Signal-to-Noise RatioS/0 Shutoff

SwitchoverS/P Signal Processor

Serial to ParallelS/R Send and ReceiveS/S Samples-per-Second

Single SidebandS/Sys SubsystemS/V Space VehicleS/W SoftwareSSA Science S ApplicationSA Supplemental Agreement

Shaft AngleSubaccount

SA-ALC San Antonio Air Logistics Center (Was SAAMA)SAAC Schedule Allocation and ControlSAB Storage and Assembly BuildingSAC Strategic Air Command (USAP)SAD System Allocation Document

Shuttle Authorized DocumentSAE Society of Automotive EngineersSAEF Spacecraft Assembly S Encapsulation FacilitySAFE San Andreas Fault Experiment

2-67

SAGE Stratospheric Aerosol Gas ExperimentSAIL Shuttle Avionics Integration LaboratorySAL Shuttle Avionics LaboratorySAM Shuttle Attachment ManipulatorSAMS Shuttle Attachment Manipulator SystemSAMSO Space And Missile Systems Organization (USAF)SAMTEC Space And Missile Test Center (VAFB, CA)SAND Site Activation Need DateSAP Strain Arrester PlateSAR Safety Analysis ReportSARP Safety Analysis Report tor PackagingSAS Stability Augmentation SubsystemSAT SaturatedSATO Shuttle Attached Teleoperator

Supply And Transportation OperationsSATS Shuttle Avionics Test System

Small Applications Technology SatelliteSAU Strap Around UnitSB Space Base

Synchronization BaseSBA Structure Borne Acoustic

Small Business AdministrationSBCR ' Stock Balance and Consumption ReportSBD Schematic Block DiagramSBHC Speed Brake Hand ControlSC Signal Conditioner

Service ChargeScaleStatement Capability

SCA Shuttle Carrier AircraftSchedule Change AuthorizationSneak Circuit Analysis

SCAN Selected Current Aerospace NoticeSCAPE Self-Contained Atmospheric Protective EnsembleSCARS Serialized Control And Record 'SystemSCAT Storage, Checkout And TransportSCB Software Control Board

Schedule Change BoardSpecification Control BoardSelection Control Board

SCBR Seller's Approved Configuration Baseline DocumentSCC Standard Cubic CentimetersSCCH Standard Cubic Centimeters per HourSCCM Standard Cubic Centimeters per MinuteSCCS Standard Cubic Centimeters per SecondSCO Specification Control Document

Source Control DrawingSpecification Control Drawing

SCDA Safing, Cool Down and Decontamination AreaSCDP Simulation Control Data Package

2-68

SCDR Shuttle Critical Design ReviewSeller Critical Design ReviewSubcontractor Critical Design ReviewSoftware Critical Design Review

SCDU Signal Conditioning S Display UnitSCE Signal Conditioning EquipmentSCF Satellite Control Facility

Seguenced Compatibility FiringStandard Cubic Feet

SCFH Standard Cubic Feet per HourSCFM Standard Cubic Feet per MinuteSCFS Standard Cubic Feet per SecondSCHEM SchematicsSCIM Standard Cubic Inches per MinuteSC1S Standard Cubic Inches per SecondSCIT Standard Change Integration and TrackingSCL Secondary Coolant Loop

Specification Change LogSCM Subsystem Configuration ManagementSCMP System Contractor Management PlanSCN Specification Change NoticeSCO Subcarrier Oscillator

Start CheckoutSCOE Special Checkout EquipmentSCOS Subsystem Computer Operating SystemSCP Specific Candle PowerSCR Sneak Circuit Report

Software Change RequestSchedule Change Request

SCS Stabilization and Control SubsystemSCT Scanning TelescopeSCU Secondary Control UnitSD Space Division (Rockwell)

Specification DocumentSDA Source Data AutomationSDC Spares Disposition Code

Software Development ComputerSDCP Summary Development Cost PlanSDCS SAIL Data Communications SystemSDD Software Description Document

Shuttle Design DirectiveSoftware Design Document

SDE Space Division EvaluatorSDF System Development Facility (Breadboard)

Single Degree of FreedomSDH Software Development HandbookSD1 Selective Dissemination of InformationSD1F Software Development 6 Integration FacilitySDL Software Development Laboratory

Standard Distribution ListSDM System Definition ManualSON Software Development NoteSDP Software Development Plan

2-69

SDR Software Design RequirementSystem Design ReviewSpacelab Disposition Record (ESA)

SDRB Software Design Review BoardSDS Shuttle Dynamic Simulation

Software Design SpecificationSDSS Space Division Shuttle SimulatorSDT Structural Dynamic TestSDTA Structural Dynamic Test ArticleSDVF Software Development S Verification FacilitiesSE Support Equipment

System ElementSEA Scanning Electrostatic Analysis '

Silicon Elastimeter AblatorSEACF Support Equipment Assembly S Checkout FacilitySEAID Support Equipment Abbreviated Items DescriptionSEB Source Evaluation BoardSEC Secondary

SecondSequential Events ControllerSource Evaluation Committee

SECS Shuttle Events Control SubsystemSE/FAC Support Equipment/FacilitySEG System Engineering GroundruleSECI Systems Engineering and IntegrationSEI Support Equipment InstallationSEICO Support Equipment Installation and CheckoutSEM Seller's Engineering Memo

Space Environment MonitoringSystem Engineering Management

SEMS Space Environment Monitor SystemSEND Shared Equipment Meed DateSEO Special Engineering OrderSEOS Synchronous Earth Observation SatelliteSEP Separation

Support Equipment PackageSEPAR Shuttle Electrical Power Analysis ReportSEQ SequenceSER SerialSERB Systems Engineering Review Board

Shuttle Engineering Review BoardSERS Shuttle Equipment Record SystemSES Shuttle Engineering Simulation

Special Emphasis StudySESL Space Environmental Simulation LaboratorySF Static Firing

Subcontractor FurnishedSquare FeetSafety, RSQA, and Protective Services

(KSC Directorate)SFACI Software Flight Article Configuration InspectionSFC Specific Fuel ConsumptionSFCS Survival Flight Control System

2-70

SFL Secondary Freon LoopSFOP Safety Operating Procedure (KSC)SFP Single Failure PointSFPA Single Failure Point AnalysisSFPPL Short Form Provisioning Parts ListSFPS Single Failure Point SummarySFT Static Firing Test

Simulated Flight TestSFTA Structural Fatigue Test ArticleSFTF Static Firing Test FacilitySFO Standard Firing UnitSGLS Space Ground Link StationSGOS Shuttle Ground Operations SimulatorSH2 Supercritical HydrogenSHA Sidereal Hour Angle

System Hazard AnalysesSHAG Simplified High Accuracy GuidanceSHERB Sandia Human Error Rate BankSHF Super High FrequencySHLB Simulation Hardware Load BoxesSHP Shaft HorsepowerSHRD Supplemental Heat Rejection DevicesSI International System of Units

Scientific InstrumentSIA Software Impact AssessmentSID System Interface Document

Shuttle Integration DeviceSIE Shuttle Interface EquipmentSIL Systems Integration Laboratory

Sound Interference LevelSilver

SILTS Shuttle Infrared Leeside Temperature SensingSIM Simulate, Simulation

Scientific Instrumentation Module :SIMAS Shuttle Information Management Accountability

SystemSIMS Shuttle Inventory Management System

Shuttle Imaging Microwave SystemSIN SineSIO Systems Integration OfficeSIP Scientific Instrument PackageSIR Systems Integration ReviewSIRR Software Integration Readiness ReviewSIS Software Implementation Specifications

System Integration ScheduleSoftware Integrated ScheduleShuttle Interface Simulator

SIT Shuttle Integrated TestSoftware Integrated Test

SIVE Shuttle Interface Verification Equipment

2-71

SL SpacelabSea LevelSound LevelShelf Lite

SLA ERNO Spacelab Product Assurance DepartmentSLAC Stanford Linear Accelerator CenterSLAM Side Load Arrest MechanismSLAR Side Looking Airborne RadarSLC ERNO Spacelab Project ControlSLCA ERNO Spacelab Contract AdministrationSLCC ERNO Spacelab Configuration ManagementSLE ERNO Spacelab EngineeringSLfil System Load and InitializationSLI ERNO Spacelab Integration & TestSLN ERNO Spacelab PayloadSLO ERNO Spacelab OperationsSLPB Spacelab Program BoardSL-SS Spacelab SubsystemSL-SSS Spacelab Subsystem SegmentSLS Secondary Landing Site

Statement Level SimulatorSortie Lab Simulator

SLT ERNO Spacelab ManagementSM Support Module

Shuttle Management (KSC)Stable MemberSystems ManagementShort Module

SMAB Solid Motor Assembly BuildingSMC Scientific Manpower CommissionSMCC Shuttle Mission Control CenterSMD Special Measuring DeviceSMES Shuttle Mission Evaluation Simulation

Shuttle Mission Engineering SimulatorSuperconducting Magnetic Energy Storage

SMM Subsystem Measurement ManagementSolar Maximum Mission

SMMD Specimen Mass Measurement DeviceSM/PM System Management/Performance MonitorSMPM Structural Materials Property ManualSMR Source, Maintenance and Recoverability (Code)SMRD Spin Motor Rotational Detector

Spin Motor Run DiscreteSMS Shuttle Mission Simulator

Separation Mechanism SubsystemSMSI Standard Manned Space Flight Initiator (See NSI-I)SMVP Shuttle Master Verification PlanSMVRD Shuttle Master Verification Requirements DocumentSMH Standard Materials WorksheetSNF System Noise FigureSNSO Space Nuclear Systems OfficeSO Support Operations (KSC Directorate)SOAR Shuttle Orbital Applications and Requirements

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SOARS Shuttle Operations Automated Reporting SystemSOATS Support Operations Automated Training SystemSOC System Option ControllerSOCC Satellite Operations Control CenterSODB Shuttle Operational Data BookSOF Safety Of PlightSOFI Spray-On Foam InsulationSOFT Space Operations and Flight TechniquesSOH Start of HeadingSOIS Spacelab/Orbiter Interface SimulatorSOL SolenoidSOM Standard Operating Manual

Spares Optimization Model(NASA) Ship Operations Manager

SOP Standard Operating ProcedureSubsystems Operating ProcedureSecondary Oxygen Pack

SOR Specification Operational RequirementSOT Strap-On TankSOV Shutoff Valve

Solenoid Operated ValveSOW Statement Of Work

Subdivision Of WorkSOX Supercritical OxygenSP Shuttle Projects Office (KSC)

Solar PhysicsSingle PoleStandard or Peculiar

SP-AF Air Force STS Liaison Office (KSC Shuttle)SPA Shared Peripheral Area

Signal Processor AssemblySpace Processing Application

SPADS Shuttle Problem Analysis Data SystemSPART Space Research and TechnologySPBK Speed BrakeSPG Shipping and Packing Cost

Starting Point CodeSPD Standard Practice DirectiveSPDR Software Preliminary Design ReviewSPE Static Phase ErrorSPEC SpecificationSPECT SpectrometerSP-FGS Flight £ Ground Systems Office (KSC Shuttle)SPF Spacelab Processing FacilitySPFA Single Point Failure AnalysisSPFP Single Point Failure PotentialSPG Single Point Ground

Signal Point GroundSPI Surface Position IndicatorSPICE Spacelab Payload Integration £ Coordination in

EuropeSP-ILS Integrated Logistics Support (KSC Shuttle)SPII Shuttle Program Implementation Instruction

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SPII Shuttle Program Implementation InstructionSPIMS Shuttle Program Information Management SystemSPL Sound Pressure Level

System Programming LanguageSP-MPC Management Planning and Control Office (KSC ShuttleSPM Subsystem Project ManagerSPMS Special Purpose Manipulator SystemSPN Shuttle Project Notice (KSC)SP-OPN Operations Planning Office (KSC Shuttle)SPO Spare Parts OrderSP-PAY Payload Integration Office (KSC Shuttle)SPPIL Shuttle Preferred Pyrotechnic Items ListSPPL Spare Parts Provisioning ListSPR Software Problem Report

Subcontractor Performance ReviewSPRAG STS Payload Requirements S Analysis GroupSPS Samples Per Second

Shuttle Procedures SimulatorService Propulsion SubsystemStatement of Prior SubmissionSecondary Propulsion System

SPTD Supplemental Provisioning Technical DocumentationSQ FT Square FeetSR Support Request

Status ReviewStatus ReportStandard RepairShift Register

SRA Support Requirements AnalysisSpin Reference Axis

SRB Solid Rocket BoosterSRBAB SRB Assembly BuildingSRBDF SRB Disassembly FacilitySRCB Software Requirements Change BoardSRCBD Software Requirements Change Board DirectiveSRD Shuttle Requirements Document

Shuttle Requirements DefinitionSystems Requirements Document

SRDH Subsystems Requirements Definition HandbookSRF Shuttle Refurbish FacilitySRH Subsystems Requirements HandbookSRM Solid Rocket Motor

Specification Requirements ManualStandard Reference Material

SRN Software Release NoticeSRSQ Safety, Reliability and QualitySRSQA Safety, Reliability and Quality AssuranceSRR System Requirements Review

Site Readiness ReviewSRS Software Requirements Specification

Specification Revision SheetSupport Requirement System

SRSR Schedule and Resources Status Report

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SRT Supporting Research and TechnologySpecification Requirements Table

SRO Shop-Replaceable UnitShop Replacement Unit

SS Space ShuttleStation SetSpace StationSystem Specification

SS&A Space Systems and ApplicationsSSA Shuttle Simulation AircraftSSAT Shuttle Service and Access TowerSSB Single Sideband

Source Selection BoardSSBC Summary Sheet Bar ChartSSC Subsystem Sequence Controller

Shuttle System ContractorSolid-Solution Cermet

SSCA Surface Sampler Control AssemblySSCHS Space Shuttle Cargo Handling SystemSSCL Shuttle System Commonality ListSSCSP Space Shuttle Crew Safety PanelSSDH Subsystem Data HandbookSSE Subsystem Element

System Support EquipmentSSFGSS Space Shuttle Flight S Ground System SpecificationSSFL Santa Susana Field LaboratorySSHB Station Set HandbookSSI Significant Structural ItemSSIBD Shuttle System Interface Block DiagramSSITP Shuttle System Integrated Test PlanSSM Support System Module

Subsystem ManagerSSME Space Shuttle Main EngineSSMECA SSME Controller AssemblySSO Safety Signification OperationSSP Space Shuttle Program

Small Sortie PayloadSSPD Shuttle System Payload Data

Shuttle System Payload Definition StudySSPDA Space Shuttle Payload Data ActivitySSPDS Space Shuttle Payload Data StudySSPM Space Shuttle Program ManagerSSPO Space Shuttle Program OfficeSSPPSG Space Shuttle Payload Planning Steering GroupSSPRO Space .Shuttle Program Resident OfficeSSPS Space Shuttle Program ScheduleSSPTF Santa Susana Propulsion Test Facility (See SSFL)SSR Station Set Requirement

Shop Support RequestSSRD Station Set Requirements DocumentSSRN System Software Reference NumberSSRR Station Set Requirements Review

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SSS Stage Separation SubsystemStation Set SpecificationSubsystem Segment

SSSS Space Shuttle System SpecificationSST Structural Static TestSSTC Space Shuttle Test ConductorSSUS Spin Stabilized Upper StageSSV Space Shuttle VehicleST Spacelab Technology

Space TelescopeSequential TimerStar TrackerStructuralSpecial Tooling

STA Shuttle Training AircraftStructural Test ArticleStatic Test ArticleStation

STAB StablizerSTADAC Station Data Acquisition and Control•STADAN' Space Tracking S Data Acquisition NetworkSTAG Shuttle Turnaround Analysis GroupSTAR Shuttle Turnaround Analysis Report

Scientific and Technical ReportSTARR Schedule, Technical And Resources ReportSTC Systems Test Complex

Standard Test ConfigurationSatellite Test Center

STCP Short Term Cost PlanSTD StandardSTDN Spaceflight Tracking and Data NetworkSTE Special Test Equipment

System Test EngineerSTF Structural Fatigue TestSTG StageSTIL Software Test and Integration LaboratorySTLOS Star Line Of SightSTM Signal Termination ModuleSTN Software Trouble NoteSTP Shuttle Technology Panel

Subsystem Test PlanSTPH Static Phase ErrorSTR System Test ReviewSTRG SteeringSTRL StructuralSTRUG StructureSTS Space Transportation SystemSTSR System Test Summary ReportSTU Special Test UnitSU Support UnitSUMC Space Ultrareliable Modular ComputerSUP SupplySURE Shuttle Users Review and Evaluation

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SV Shuttle VehicleSafety ValveSolenoid Valve

SVASC Shuttle Vehicle Assembly and CheckoutSVAB Shuttle Vehicle Assembly BuildingSVB Shuttle Vehicle BoosterSVC Supervisor CallSVDS Space Vehicle Dynamic SimulatorSVRR Software Verification Readiness ReviewSW Short Wave

SoftwareSwitcher (Switch)Solar Wing

SWA Support Work AuthorizationSWAO Subdivision of Work Authorization DocumentSWAT Stress Wave Analysis TechniqueSWOB Salaries, Wages, Overhead and BenefitsSWP Safe Working PressureSXT SextantSifM " SymbolSYMM SymmetricalSYN Synchronous

SyntheticSYNC SynchronizeSYS SystemSYSTRAN Systems Analysis Translator

T TestTime

T- Time Prior to LaunchT-O TakeoffT/A TurnaroundT/C Termination CheckT/D Touchdown

Time DelayT/E Transporter ErectorT/L Talk and ListenT/R Transmit-Receive

Tape RecorderTransformer Rectifier

T/T Terminal TimingTiming/Telemetry

T/TCA Thrust/Translation Control AssemblyT/V Thermal/VacuumT/W Thrust-to-Weight

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TA Test ArticleTask AnalysisTrunnion AngleTravel AuthorizationTime Actual

TAA Technical Assistance AgreementTAG Total Average Cost

Tactical Air CommandTACAN Tactical Air NavigationTACO Test And Checkout OperationsTAEM Terminal Area Energy ManagementTAG Technical Air-to-GroundTAIR Test Assembly Inspection RecordTALAR Tactical Approach and Landing RadarTAM Thermal Analytical ModelTAP Telemetry Acceptance Pattern

Technical Achievement PlanTotal Air Pressure

TAR Test Action RequirementTest Agency ReportTechnical Analysis Request

TAS Telemetry Antenna SubysystemTrue AirspeedTest Article Specification

TASPR Technical And Schedule Performance ReportTAT Total Air Temperature

Turn Around TimeTB Talk Back

Terminal BaseTBA To Be AddedTBD To Be Determined

To Be DevelopedTBE To Be EvaluatedTBN To Be NegotiatedTBP . To Be ProvidedTBS Task Breakdown Structure

To Be SpecifiedTo Be SuppliedTo Be Superseded

TSCD Timing and CountdownTC Telecommunications

ThermocoupleTest Conductor (Controller)Temperature CompensatingTraceability CodeTracking CameraThrust ChamberThermal Control

TCA Thrust Chamber AssemblyTranslation Controller Assembly

TCC Thermal Control CoatingTCD Test Completion DateTCG Time Code Generator

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TCI Technical Critical ItemTCID Test Configuration IdentifierTCMD Transportation Control and Movement DocumentTCN Transportation Control Number

Test Change NoticeTCOP Test and Checkout PlanTCP Test Checkout Procedure

Test Control PackageTCR Thermal Concept ReviewTCRSD Test £ Checkout Requirements £pec. DocumentationTCS Thermal Control Subsystem

Test Control SupervisorTest Control System

TCSSS Thermal Control Subsystem SegmentTCTI Time Compliance Technical InstructionTCTO Time Compliance Technical OrderTCU Tape Control UnitTD Technical Directive

Terminal DistributorTDD Task Description DocumentTDM Time-Division MultiplexingTDP Temperature and DewpointTDR Technical Design Review

Technical Documentation ReportTDRS Tracking and Data Relay SatelliteTDRSS Tracking Data and Relay Satellite SystemTDSSA Telephone, Data S Special AudioTDS Test Data System

Technology Demonstration SatelliteTDU Time Display UnitTDY Temporary DutyTE Test EquipmentTEC Test Equipment CenterTECH TechnicianTELCOM TelecommunicationsTEMP TemperatureTEOS Tetraethyl OrthosilicateTEP Technical Evaluation PanelTER Test Equipment Readiness

Time Estimating RelationshipTERL Test Equipment Readiness ListTP Test Facility

Test FixtureTFC Time From CutoffTFCS Triplex Flight Control SubsystemTFE Time From EventTFI Time From IgnitionTFL Time From LaunchTFS Telemetry Format SelectionTFU Test Facility UtilizationTGA Thermal Gravimetric AnalysisTGS Telemetry Ground System

Telemetry Ground Station

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TGSE Telemetry Ground Support EquipmentTGT TargetTHC Translation Hand ControllerTI Technical IntegrationTIC Technical Information Center

Total Item ChangeTIFS Total Inflight SimulatorTil Tooling Inspection InstrumentationTL Lot Traceability

Thrust LevelTLC TelecommandTLM TelemetryTLS Time Line SheetTLV Transporter - Loader VehicleTM Member Traceability

Technical ManagementTraffic Model

TMB Transportation Management BulletinTMC Test Monitoring ConsoleTMF Transporter Maintenance FacilityTMO Tool Manufacturing OrderTMP Terminal PanelTMPV Torguemotor Pilot ValveTMU Temperature Measurement UnitTN Technical NoteTO Technical OrderTOC Test Operations Center

Test Operations ChangeTOL ToleranceTOT TotalTP Transition Period

Test PointTest Procedure

TPA Test Preparation AreaTPSC Thermal Protection and ControlTPE Test Project EngineerTPF Tug Processing Facility

Terminal Phase FinishTPI Terminal Phase InitiationTPM Technical Performance Measurement (system)TPR Test Problem ReportTPS Thermal Protection Subsystem

Test Preparation SheetTPUN Test Procedure Update NoticeTR Test Request

Technical ReportTransportation Request

TRA Training Requirements AnalysisTurnaround Requirements Analysis

TRACS Tool Record Accountability SystemTRB Test Review BoardTRL Test Readiness ListTRR Test Readiness Review

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TRS Tug Rotational SystemTroubleshooting Record Sheet

TRSD Test Requirements Specification DocumentTS Serial Traceability

Tensile StrengthTest SiteTechnical SupportTime Scheduled

TSA Test Start ApprovalTSAC Tracking System Analytic CalibrationTSB Twin SidebandTSC Test Setup CompleteTSD Test Start DateTSE Transportation Support EquipmentTSGP Test Sequence Generator Program (ESTEC)TSLD Troubleshooting Logic DiagramTSM Trade Study Management

Tail Service MastISO Time Since Overhaul

Time Sharing OptionTSP Test Software Program

Twisted Shielded Pairs (Cables)TSR Technical Status Review

Test Status ReportTSRA Total System Requirements AnalysisTSS Tug Structural Support

Time Sharing SystemTST Test By SellerTSW Test SwitchTT Thrust Termination

Total TimeTTA Thermomechanical Test AreaTTC Tunnel Thermal Control

Tracking, Telemetry and ControlTTCA Thrust Translation Controller AssemblyTTCV Tracking Telemetry, Command and VoiceTTEL Tool and Test Equipment ListTTL Transistor-Transistor LogicTTU Timing Terminal UnitTTJf TeletypeTU Technical UtilizationTV Thermal Vacuum

TelevisionThrust Vector

TVA Thrust Vector AlignmentTVAR Test VarianceTVC Thrust Vector Control

Thermal Vacuum ChamberTVCD Thrust Vector Control DriverTVEXPIS TV Experiment Interconnecting StationTVN Test Verification NetworkTVP Test Verification ProgramTVS Toxic Vapor Suit

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TVSSIS TV Subsystem Interconnecting StationTVT Thermal Vacuum TestTVTA Thermal Vacuum Test ArticleTWR TowerTWT Trisonic Wind TunnelTWX Teletype wire TransmissionTX Transmit Channel

-U-

U Micro (Micron)Uranium

U/C Under CurrentU/L UplinkCJ/M Unmanned

Unit of MeasureUnscheduled Maintenance.

U/0 Used OnU/V Under VoltageU/W Used WithUA Micro AmpereUB Utility BridgeUC Unsatisfactory ConditionUCN Uniform Control NumberOCR Unsatisfactory Condition ReportUCS Universal Control System

Utilities Control SystemUD UpdateUDB Update BufferUDF Utility and Data FlowUDL Updata LinkUDS Universal Documentation SystemUER Unique Equipment RegisterUF MicrofaradUFD User File DirectoryUG MicrograraUHF Ultrahigh FrequencyUI Unit of Issue .ULL UllageULO Unmanned Launch OperationsULT UltimateUMB UmbilicalUMO Unmanned OrbitalUMVF Unmanned Vertical FlightUPTLM Up-Link TelemetryUS United StatesUSAF United States Air ForceUSB Upper Side Band

Unified S-Band

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USBE Unified S-Band EquipmentUSBS Unified S-Band SystemUSEC MicrosecondUSNS United States Navy ShipUSS United States Standard

United States ShipUST United States Testing (Company)UT Universal Time

Unit TesterUTC United Technology Center

Universal Test ConsoleUTE Universal Test EquipmentUU MicromicronUUT Unit Under TestUV Under Voltage

UltravioletMicrovolt

UVD Under Voltage DeviceUVP Unmanned Vertical FlightUW Microwatt

-V-

V VelocityVoltVoice

V-A Vibro AcousticV/A Video/AnalogV/C Vector ControlV/H Velocity-to-HeightVA Volt AmpereVAB Vehicle Assembly BuildingVAC Volts, Alternating Current

VacuumVehicle Assembly and Checkout

VAFB ' Vandenberg Air Force BaseVAK Vertical Assembly KitVAN USNS Vanguard (STDN)VAR Variable (Variance, Variation)

Verification Anaylsis ReportVolt Ampere Reactive

VASI Visual Approach Slope IndicatorVAST Versatile Avionics System TesterVAT Vibro-Acoustic TestVATA Vibro-Acoustic Test ArticleVATF Vibration and Acoustic Test, FacilityVA/TVTA Vibro-Acoustic/Thermal/Vacuum Test ArticleVC Vector Character

Velocity Counter

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VCB Vertical Location of the Center of BuoyancyVCG Vertical Location of the Center of GravityVCI Velocity Change IndicatorVCH Volatile Condensable MaterialVCO Voltage Controlled OscillatorVCT Voltage Control TransferVCTR VectorVDC Volts, Direct CurrentVDS Vehicle Dynamics SimulatorVDU Visual Display UnitVE Shuttle Engineering (KSC VO Directorate)VEEI Vehicle Electrical Engine InterfaceVEH VehicleVERIP VerificationVERT VerticalVF Vertical Plight

Video FrequencyVPI Verification Flight InstrumentationVFO Variable Frequency OscillatorVFR Visual Flight RulesVPT Vertical Plight Test (superseded by OFT)VGOR Vehicle Ground Operation RequirementsVGP Vehicle Ground PointVGT Vehicle Ground TestVHP Very High FrequencyVHP/AM Very High Frequency Amplitude ModulatorVHP/DP Very High Frequency Direction FinderVIA By Means Of (By Way Of)VIB VibrationVID VideoVIS Verification Information System

VisibilityVISC ViscosityVJ Vacuum JacketedVL Expendable Vehicles (KSC VO Directorate)VLBI Very Long Baseline InterferometerVLF Very Low FrequencyVLR Very Low RangeVM Voltmeter

Virtual MemoryVMF Vertical Maintenance FacilityVMS Velocity Measuring SystemVO Space Vehicle Operations (KSC Directorate)VOL VolumeVOM VoltohmmeterVOR VHP Omnidirectional Radio RangeVORTAC Variable Omni Range Tactical (VOR and TACAN)VOT VHP OmnitestVOX Voice Operated TransmitterVP Vertical Polarization

Vacuum PumpShuttle Payloads (KSC VO Directorate)

V P-P Volt Peak-to-Peak

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VPK Volts PeakVPM Vehicle Project ManagerVR Voltage Relay

Video RecorderVRB VHP Recovery BeaconVRF Vertical Removal FixtureVRL Vertical Recovery LineVRHS Volts Root Mean SquareVRR Verification Readiness ReviewVS Staging VelocityVSA Variable Stability AircraftVSI Vertical Speed Indicator

Video Simulation InterfaceVSWR Voltage Standing Wave RatioVT STS Processing (KSC VO Directorate)VTP Vehicle Test Plan

Verification Test ProgramVerification Test Plan

VTR Video Tape RecorderVTs Vertical Test StandVTVM Vacuum Tube VoltmeterVTX VertexVU Volume UnitW Vent ValveVX Velocity Along the X-AxisVY Velocity Along the Y-AxisVZ Velocity Along the Z-Axis

-W-

W WattW/ WithW/B WidebandW/G Water/GlycolW/O WithoutW/S Work StationW/T Wind TunnelWA Work AuthorizationWAD Work Authorization DocumentWAD/SO Work Authorization Document/Shop OrderWAN Work Authorization DumberWAR Work Authorization ReportWSB Weight and BalanceWB Wet BulbWBS Work Breakdown StructureWBSC Wideband Signal ConditionerWBTS Wideband Transmission SystemWSC Wire and CableWCCS Window Contamination Control Number

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WCDB Work Control Data BaseWCP Wing Chord PlaneWCS Work Control SystemWO Work Days

WidthWired Discrete

WG Wave GuideWing

WHL WheelWHR Watt-HourWIB When Interrupt BlockWIF Water Immersion FacilityWIP Work in ProgressWL WavelengthWM Waste ManagementWO Work OrderWOW Weight-On-WheelsWP Working Pressure

Work PackageWPAFB Wright Patterson Air Force BaseWPC Watts Per CandleWPD Work Package DescriptionWPF Work Process FlowWPG Work Package GroupingWPI Work Progress IndicatorWPM Words Per MinuteWPMCP Work Package Manpower and Cost PlanWPP Work Package PlanWPPS Work Package Planning SheetWRG WiringWRL Wing Reterence LineWRO Work Release OrderWS Wind Shield

Work StatementWSCC Work Station Control CenterWSMR White Sands Missile RangeWSTF White Sands Test FacilityWSU Water Servicing UnitWSWR Variable Standing Wave Ratio (Rate)WT Weight

Wire TicketWTA Wire Traceability and AccountabilityWTR Western Test RangeWTSC Wet Tantalum Slug CapacitorWTT Wind Tunnel TestWUC Work Unit CodeWW Water WasteWX Weather

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-X-

X Times (By, Trans- )XCVR TransceiverXDCR TransducerXFD CrossfeedXFER TransferXLTN TranslationXMT TransmitXPNDR TransponderXTAL CrystalX sub 0 Orbiter Structural Body Reference, X-AxisX sub P Payload Structural Body Reference, X-AxisX sub S SRB Structural Body Reference, X-AxisX sub T ET Structural Body Reference, X-Axis

-Y-

Y YawHorizontal Axis - Width of VehicleY-Axis, Horizontal - Width of Vehicle/Structure

YD YardYP Yield PointYR YearYS Yield StrengthYST Yearly Spares CostYT Station Identification SymbolY sub 0 Orbiter Structural Body Reference, Y-AxisY sub P Payload Structural Body Reference, Y-AxisY sub S SRB Structural Body Reference, Y-AxisY sub T ET Structural Body Reference, Y-Axis

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-z-

Z Zulu (Greenwich Mean Time - GMT)Zone

ZGT Zero Gravity. TrainerZI Zone of InteriorZO Station Identification Symbol, Orbiter X-AxisZPN Impedance PneumogramZS Station Identification Symbol, SRB Z-AxisZT Station Identification Symbol, ET Z-AxisZ sub O Orbiter Structural Body Reference, Z-AxisZ sub P Payload Structural Body Reference, Sf-AxisZ sub S SRB Structural Body Reference, Z-AxisZ sub T ET Structural Body Reference, Z-Axis

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