MILlTARYHANDBOOK ...everyspec.com/MIL-HDBK/MIL-HDBK-0200-0299/download.php?...representative shall review EDP’s during the full-scale engineering development and production/deployment

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MILlTARYHANDBOOK

REVIEWAND ACCEPTANCEOF ENGINEERING

DRAW1NG PACKAGES

MIL-HDBK-288 (MC)24 October 1985

NO DELIVERABLE DATA REQUIRED BY THIS DOCUMENT AREA DRPR

DISTRIBUTION STATEMENT A. Approved for public release; distribution

●is unlimited.

Downloaded from http://www.everyspec.com

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MIL-HDBK-288 (MC)

DEPARTMENT OF THE NAVYUNITED STATES MARINE CORPSWASHINGTON, D.C. 20380

Review and Acceptance of Engineering Drawing Packages

1. This standardization handbook was developed by the UnitedStates Marine Corps.

2. This handbook supplements DOD-STD-1OO, DOD-D-1OOO, and otherapplicable documents. It provides information and a recommendedprocedure for reviewing and accepting or rejecting engineeringdrawing packages.

3. Beneficial comments (recommendations, additions, deletions)and any pertinent data which may be of use in improving thisdocument should be addressed to: Commandant of the Marine Corps(Code LMA-1) Headquarters, U. S. Marine Corps, Washington, D.C.20380, by using the self-addressed Standardization DocumentImprovement Proposal (DD Form 1426) appearing at the end of thisdocument or by letter.

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● FOREWORD

MIL-HDBK-288 (MC)

A substantial percentage of contract dollars is spent ontechnical data. The engineering drawing package (EDP) is one ofthe most expensive data items purchased in the course of asystem’s acquisition. The EDP is used to evaluate and validate adesign concept, to maintain proper configuration control, tosupport quality assurance functions, to provide technical datafor competitive reprocurement of spares and end items, and as themajor source of technical information for logistics supportthroughout a system’s lifecycle. The EDP, supplemented byequipment specifications and quality assurance procedures, shouldcontain enough information to allow any competent manufacturer topurchase materials and com~onents, manufacture, test, inspect,and deliver articles iden%lcal to or interchangeable with thosedelivered by any other manufacturer using the same.EDP. The EDPshould not require any additional data, instructions, manuals,company or industry standards to fulfill its intended purpose.

Discrepancies in the EDP, or limitations placed on its use, canlead to the procurement of unusable spare parts, unreliable orinoperative equipment, or multiple configurations of the sameitem.

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A poor EDP can also prevent competitive reprocurement ofspares and end items riueto technical difficulties and high test.It is imperative that EDP’s procured in support of DOD materielacq!~isitions be reviewed and audited for accuracy, adequacy, andcompleteness. An EDP is validated by using it in themanufacture, inspection, and test of the items it depicts.Unless otherwise specified in the procurement contract, themanufacturer validates the data furnished to the Government. AnEDP is verified by Government monitoring during drawingpreparation, technical reviews of completed drawings, andconfiguration audits. Verifications are normally performed bythe Government to ensure compliance with contract datarequirements, and are limited to level 2 and level 3 EDP’s.

This handbook details procedures to be followed in monitoringand revi?wlng ZDF’production, and provides guidance to thedrawing reviewer concerning what to look for when reviewing anCDP. This handbook also provides a method for documenting andreporting the discrepancies discovered during EDP reviews.

This handbook is not designed to supersede the requirementscontained in ot!lerspecifications or standards. Nor is it anattempt to combine all of the detailed quality assurancerequirements from the individual specifications and standards

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MIL-FIDBK-288(MC)

into one document. This handbook is designed as an aid inperforming EDP reviews by reminding the reviewer of some of themore important requirements to be looked at on the morefrequently encountered drawings.

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Paragraph 1.

1.11.21.31.4

2.

2.12.1.1

2.1.2

2.22.32.42.4.1

2.4.22.4.3

3.

3.13.23.3

3.63.73.83.93.103.113.123.133.143.153.163.17

MIL-HDBK-288 (MC)

CONTENTS

Es%?

SCOPE ....................................

Purpose ..................................Scope ....................................Applicability ............................Application guidance

REFERENCED DOCUMENTS

Government documents

. . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . .Specifications, standards,

and handbooks ..........................Other Government documents and

publications ...........................Other publications .......................Order of precedence .........Source of documents .........Government specifications,

-..-2..s,.=Lcl,,”a.”a.ir!dF,ar,dboo’ks...Other Government documents ..Sources for nongovernment pub

. . . . . . . . . . . .

. . . . . . . . . . . .

. . . . . . . . . . . .

. . . . . . . . . . . .ications ...

DEFINITIONS ..............................

Altered item drawing .....................Assembly drawing .........................Associated list... .............Commercial item.... ............Contract data requirements listContracting officer ............Contractor .....................Data item description (DID) ....Desiqnactivitq .................

. . . . . . . . .

&Ai;.:::. . . . . . . . .. . . . . . . . .. . . . . . . . .. . . . . . . . .

Deta~leddrawi~g .........................Engineering drawing ......................Engineering drawing package ..............Engineering study (ES) ...................Reviewing activity .......................Selected item d:awlng ....................Source control drawing ...................Specification control drawing ............

1

1111

2

2

2

3344

~44

5

55555555556666666

.,,,


MIL-HDBK-288 (MC)

4.14.24.34.44.4.14.4.24.54.64.6.14.6.24.6.34.74.84.8.1

4.8.24.8.34.8.3.14.8.3.24.8.3.34.94.9.14.9.24.10

5.

5.1

5.1.15.1.25.1.35.1.3.15.1.3.25.1.3.35.1.3.45.1.3.55.1.45.1.5

GENERAL REQUIREMENTS ..................... 7

EDP ...................................... ~Reviewing the EDP ........................ 7Principal phases of EDP reviews .......... 7Reviewing activity ....................... 7Familiarity with requirements ............ 7Reviewing theCDRL ....................... 8Contractor indoctrination ................ 8‘rechnicalreviews of the EDP ............. 9Surveillance of drawing preparation ...... 10Reviewing for technical content .......... 10Follow-on review ......................... 10ES ....................................... 11Final review ............................. 11Review of previously documented

discrepancies .......................... 11Review for completeness .................. 11Review of drawing media .................. 12Original drawings ........................ 12Master pattern drawings .................. 12Microfilm/aperture cards ................. 12Recommending a~ceptance or rejection ..... i3Acceptanccof theEDP .................... 13Rejection of the EDP ..................... 13General guidance for reviewing EDP’s ..... 13

DETAILE1 REQUIREMENTS .................... 15

Reviewing for correct material andmechanical specifications .............. 15

Material specifications .................. 15Castings and forgings .................... 15Mechanical specifications ................ 16General requirements ..................... 16Thread data L7..............................Spring data .............................. 17Gear data ................................ 17Bearing data ............................. 18Sheet metal data ......................... 18Plating and finishing data ............... 18

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MIL-HDBK-288 (MC)

Paragraph 5.25.35.4

5.4.15.4.2

5.4.3

5.4.45.55.5.15.5.1.15.5.1.25.5.25.5.2.15.5.2.25.5.35.5.45.65.6.15.6.2cc?./.w..J5.-15.7.15.7.25.7.35.7.45.7.55.7.6

5.7.7

5.7.85.7.95.7.105.7.11

“Reviewing assembly drawings ..............Reviewing detailed drawings ..............Reviewing drawings of electrical

and electronic systems .................General ..................................Wiring diagrams and wiringharness drawings .........................Schematic, logic, and interconnection

diagrams ...............................Printed wiring board drawings ............Reviewing control drawings ...............Specification control drawings (SCD) .....Criteria for designation .................Reviewing SCD’s ..........................Source control drawings (SOCD) ...........Criteria for designation .................Reviewing SOCD’S .........................Selected item drawings ...................Altered item drawings ....................Reviewing lists associated with the EDP ..Parts lists (PL’s) .......................Data lists (DL’s) ........................~~~~~~~~~s (11,’s).......................Preparing anES ...........................Documenting discrepant findings ..........Cover sheet ..............................Introduction .............................List of general comments .................General comments .........................List of reviewed drawings to which

only general comments apply ............Index of reviewed drawings to which

specific comments apply ................Specific comment sheets ..................List of missing documents ................IL/DLdiscrepancies ......................Distribution of theES ...................

@

1920

2020

21

222325252525262626272828282930303030313131

32

3232333333

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I Figure 1

2

3

4

5

6

1

8

9

MIL-HDBK-288 (MC)

FIGURES

Sample format of an engineering studycover sheet ............................ 35

Sample format of an introduction toan engineering study ................... 36

Sample format of a list of generalcomments ............................... 37

Sample format of a general comment,engineering study ...................... 38

Sample format of a list of revieweddrawings to which only generalcomments apply ......................... 39

Sample format of an Index of revieweddrawings to which specificcomments apply ......................... 40

Sample format of a specific commentsheet .................................. 41

Sample format of a list of missingdocuments .............................. 4Z

Sample format of an index list/datalist discrepancy form .................. 43


MIL-HDBK-288 (MC)

1. SCOPE

1.1 Purpose. The purpose of this handbook is to provideguidance on the review of engineering drawing packages (EDP’s).

1.2 m. This handbook provides a method to review anddocument the review of EDP’s.

1.3 Applicability. The information contained in Section 5is intended to be selectively applied to the review of specificEDP’s.

1.4 Application quidance. The contents of this handbookguide the user in reviewing level 2 and level 3 engineeringdrawings of military equipment. The Government or an authorizedrepresentative shall review EDP’s during the full-scaleengineering development and production/deployment phases ofsystem acquisitions. When tailoring the methods and informationin this handbook to the review of specific EDP’s, follow theseprincipals:

a. Every system is different, and so is every EDP. ‘l’henumber and types of drawings in an EDP vary according tothe system they depict. Thus,

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the number and types ofdra.wir,gsto be i~Vi~W~Cl vary f~ort ~~~ ~,r.+=m ~~q,u~s~t~nn~-.-...to another.

b. The techniques and standards used to review an EDP mustbe tailored to the type of design an EDP depicts. Forexample, the review of a wiring diagram requires acompletely different approach than the review of anassembly drawing of a mechanical system. Section 5 iswritten with this in mind.

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MIL-HDBK-288 (MC)

2. REFERENCED DOCUMENTS

2.1 Government documents.

2.1.1 Specifications, standards, and handbooks. Unlessotherwise specified, the following specifications, standards, andhandbooks of the issue listed in that issue of the Department ofDefense Index of Specifications and Standards (DODISS) specifiedin the solicitation form a part of this handbook to the extentspecified herein (see 2.4.1).

SPECIFICATIONSMILITARY

DOD-D-1OOO

PfIL-D-5480

MIL-D-851O

MIL-M-9868

&lIL-c-9i377

MIL-D-18300

MIL-M-38761

Drawings, Engineering andAssociated Lists

Data, Engineering andTechnical, ReproductionRequirements for

Drawings, Undimensioned,Reproducible, Photographicand Contact, Preparation of

Microfilming of EngineeringDocuments, 35mm, RequirementsFor

Cards, Aperture

Design Data Requirements ForAvionic Equipment

Microfilming +.J Photographingof Engineeri..~/Technical Dataand”Related Documents, PCAMCard Preparation, EngineeringData Micro-ReproductionSystem, General Requirementsfor, Preparation of


o STP>NDARDS,MILITARY

DOD-STD-1OO

MIL-STD-105

MIL-HDBK-288 (MC)

Engineec

Sampling

ng Drawing practices

Procedures and Tablesfor-Inspection by Attributes

MIL-STD-130 Identification Marking of U.S.Military Property

MIL-STD-275 ?rinting ‘Wiringfor Electronictlq~ipment

MIL-STD-894 Format and Coding ofTabulating and Aperture Cardsfor EDMS

2.1.2 Other Government documents and publications. Thefollowing other Government documents and publications form a partof this handbook to the extent specified herein (see 2.4.2).

H6-1 Federal Item Name Diiectoryfor Supply Cataloging

C)therpublications. The following documents form a &arthandbook to the extent soecified herein. Unless

2.2.of this _.-.otherwise specified, the issues &f the documents which are DODadopted shall be those listed in the issue of the DODISSspecified in the solicitation. The issues of documents whichhave not been adopted shall be those in effect on the date of thecited DODISS (see 2.4.3).

AMERICAN NATIONAL STANDARDS INSTITL1’rE(ANSI)

ANSI-Y14.1 Drawing Sheet Size and Format

A}/sI-i’14.5

ANSI-Y14.6

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A?iSI-Y14.3 Multi and Sectional ‘JiewDrawings, Engineering Drawingand ;~elaterlDocumentationPractices

Dimensioning and ‘rolerancingEor Englneerinq Orawings

screw ‘I’breadRepresentation,L,n,jinecringD1-awingandRel.citedDocumentation IPractices


MIL-HDBK-28E (MC)

ANSI-Y14,7.1 Gear Drawing Standards, Part 1

ANSJ-:’.;.7.2 Gear Drawing Standards, Part 2

ANSI-Y14.15 Electrical and ElectronicDiagrams

ANsI/IPc-D-350B Printed Board Description inDigital Form

2.3 Order of precedence. In the event of a conflict betweenthe text of this handbook and the references cited herein, thetext of this handbook shall take precedence.

2.4 Source of documents.

2.4.1 Government specifications, standards, and handbooks.Copies of the referenced federal and military specifications,standards, and handbooks are available from the Department ofDefense Single Stock Point, Commanding Officer, NavalPublications and Forms Center, 5801 Tabor Avenue, Philadelphia,PA 19120. For specific acquisition functions, these documentsshould be obtained from the contracting activity or as directedby the contracting activity.

2.4.2 Other Government documents. Copies of other Governmentdocuments required by contractors in connection with specificacquisition functions should be obtained from the contractingactivity or as directed by the contracting activity. Thedocuments listed may be obtained as follows:

a. Copies of H6-1 should be obtained from the GovernmentPrinting Office, Washington, D.C. 20402.

2,4.3 Sources for nonqovernment publications. Nongovernmentdocuments are generally available for reference from librariesand technical groups. The documents listed may be obtained asfollows:

a. ANSI : Application for copies should be addressed to theAmerican National Standards Institute, Inc., 1430 Broadway,New York, NY 10018.

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MIL-HDBK-288 (MC)

● 3. DEFINITIONS

3.1 Altered item drawinq. An engineering drawing whichdepicts the alteration of an existing item from its originalconfiguration. An altered item drawing depicts complete detailsof the alteration.

3.2 Assembly drawinq. An engineering drawing that depicts anumber of parts or subassemblies joined together to perform aspecific function. An assembly drawing depicts the details ofhow the parts or subassemblies are joined and interact.

3.3 Associated list. A tabulation of pertinent engineeringinformation pertaining to an item depicted on an engineeringdrawing or a set of engineering drawings. Examples include partslists, index lists, and data lists.

3.4 Commercial item. An article regularly used for other thanGovernment purposes, which is sold or traded in the course ofnormal business operations.

3.5 Contract data requirements list (CDRL). A list of datarequirements that are authorized for, and made part of, a

a

specific contract. The CDRL is prepared on DD Form 1423.

3.6 Contracting officer. Any person granted the authority toenter into and administer contracts on behalf of a Governmentagency. The term includes any individual who is delegated suchauthority.

3.7 Contractor. Any individual, partnership, public orprivate corporation, association, institution, or other entitywhich enters into a contract with the Government.

3.8 Data item description (DID). A description of an item ofdata required by the Government which defines the content,preparation instructions, format, and intended use of the dataproduct. The DID is prepared on DD Form 1664, and becomes partof the CDRL.

3.9 Desiqn activity. A Government activity or a contractorwhich is responsible for the design of an item.

3.10 Detailed drawinq. An engineering drawing which depictsone or more details of an item or assembly.

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MIL-HDBK-288 (MC)

3.11 Enqineerinq drawinq. A document which graphically depictsengineering data pertaining to an item or assembly.

3.12 Enqineerinq drawinq packaqe (EDP). A collection ofengineering drawings, associated lists and documents,manufacturer specifications and standards, or other informationrelating to the design and manufacture of an item or system.

3.13 Enqineerinq study (ES). A document prepared by thereviewing activity that documents discrepancies noted during anin-process or final review of an EDP.

3.14 Reviewirm activity. The Government activity assigned toperform in-process or final technical reviews of EDP’s.

3.15 selected item drawinq. An engineering drawing thatdepicts an existing standard, or design, or vendor activity itemupon which further required selection or restriction for fit,tolerance, performance or reliability is placed. (See DOD-STD-100 for complete requirements.)

3.16 Source control drawinq. An engineering drawing thatdepicts an existing commercial or vendor item which exclusivelyprovides the performance, installation, and interchangeablecharacteristics required for one or more specific criticalapplications. (See DOD-STD-1OO for complete requirements.)

3.17 Specification control drawinq. An engineering drawingthat depicts an existing commercial vendor-developed itemadvertised or cataloged as available on an unrestricted basis onorder as an off-the-shelf item; or an item, while notcommercially available, is procurable on order from a specializedsegment of industry. (See DOD-STD-1OO for completerequirements.)

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MIL-HDBK-288 (MC)

● 4. GENERAL REQUIREMENTS

4.1 EDP. If not already in existence, some form ofenginee=g drawing will be prepared by the manufacturer orsystem developer at the start of a program. During theconcept/exploration and demonstration/validation stages of systemdevelopment, the drawing package may contain only enough detailto permit design evaluations and cost projections. As the designprogresses and the program moves through full scale engineeringdevelopment and finally into production, tbe drawings become moreand more detailed. The drawing levels described in DOD-D-1OOOenable the EDP to follow this progression from design concept toproduction. They are: level 1, Conceptual or DevelopmentDesign; level 2, Production Prototype or Limited Production; andlevel 3, Production.

4.2 Reviewinq the EDP. From its inception to its disposal,the EDP is a dynamic set of documents. As a program progresses,design changes are made, manufacturing difficulties areencountered, technology changes, and drawing errors are located.All of these events require the design activity to change theEDP. Regardless of the reason for changes, the EDP must becontinuously reviewed to ensure that it accurately depicts the

a

article in its current configuration.

4.3 Principal phases of EDP reviews. The principal phases ofthe review process for EDP’s are:

a. Selection of reviewing activity and review of contractrequirements.

b. Contractor indoctrination.

c. Technical reviews.

d. Documenting discrepant EDP’s.

e. Final review.

f. Recommending acceptance or rejection oi the EDP.

4.4 Reviewinq activity.

4.4.1 Familiarity with requirements. Everyone who reviewsEDP’s should become thoroughly familiar with the drawing require-ments in applicable Government specifications and standards.This handbook aids in performing ED? reviews by reminding the


MIL-HDBK-288 (MC)

reviewer of some of the more important requirements to bereviewed on the most frequently encountered drawings. EDP ‘Sshe,.’.dbe reviewed by expertsdeT:, ted.

4.4.2 Reviewinq the CDRL.document controlling the EDP.

in the type of item or assembly

The contract is the most importantEach requirement for the EDP is

prepared in the for~ of a DID on DD Fo~m 1664. The DID’s arelisted on a CDRL, DD Form 1423, which is appended to thecontract. It is essential that the DID’s and the CDRL adequatelyand accurately describe the requirements for the EDP, inciudinglevel of drawings, tailoring requirements, associated lists,formats, and delivery schedules. The persons assigned to reviewan EDP should first review each DID and CDRL and become familiarwith the contract and what it requires the contractor to deliverto the Government.

4.5 Contractor indoctrination. Government personnel assignedto perform the technical review of the EDP must understand thecontract, and the contractor must agree with them on what isrequired for each deliverable. Both parties should meet as earlyin the contract period as possible and review contractrequirements together. Any disagreement over the interpretationof the contract should immediately be brought to the attention ofthe procuring activity’s progiam office for resolution. Thisindoctrination may not “oeneeded whei”]fullv$-or,Giikracts areawarded to the same contractor, or when the contractor is alreadyworking on more than one project for the same Governmentprocuring activity. The reviewing activity and the contractorshould discuss the following topics when they meet:

a.

b.

c.

d.

e.

f.

The contractor’s drafting practices and drawing formats.

The contractor’s quality assurance procedures forpreparing, checking, and revising EDP’s.

Types of lists (index, data, and parts) to be furnished.

Approximate number of drawings to be furnished.

Security classification of drawings or data.

Contractor proprietary rights over any drawing orassociated document in the EDP. The contract mustspecify the extent of contractor rights-in-data.

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MIL-HDBK-288(MC)

● 9. Whether the contractor plans to use existing drawings ordata as part of the EDP. If so, ensure that they areacceptable to the Government.

h. Types of drawings to be furnished by the contractor foroff-the–shelf items.

i. Under what conditions specification and source controldrawings shall be used and will be accepted.

j. If wire harness drawings will be furnished under thecontract. If so, consider using them as templates formaking wire harnesses, in order to reduce manufacturingcosts.

k. Types of drawings to be used for documenting printedcircuits.

1. The use of Government and industry standard partswhenever possible.

m. ContractorEDP .

n. Procedureschanges in

provisions for test specifications in the

for incorporating approved engineeringthe EDP.

o. Whether the EDP will be used as supplementary provision-ing technical documentation.

P- Subcontracting of drawing requirements to othercontractors, if applicable. The prime contractor shallensure that subcontractor drawings conform to contractrequirements.

q. Government procedures for reviewing the EDP anddocumenting deficiencies.

r. Contractor procedures and time limit to respond toGovernment comments and correct deficiencies in the EDP.

4.6 Technical reviews of the EDP. Government agenciesconduct in-process technical reviews to monitor the preparationof EDP’s and to evaluate the technical content of individualdrawings or entire EDP’s.

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MIL-HDBK-288 (MC)

4.6.1. Surveillance of drawinq preparation. It is essentialthat the Defense Contract Administrative Service (DCAS) or otherGovernment reviewing activity monitor drawing preparation. Anactive drawing surveillance program brings technical ormanagerial problems to light early in the acquisition program,thus avoiding potentially costly and time-consuming errors. Thesurveillance program should include inspections of procurement,man~facturing, and test facilities to ensure that the drawings,or documents developed from the drawings, are used in thefunctions for which they are prepared.

4.6.2 Reviewinq for technical content. Technical reviews ofengineering drawings vary according to the type and level ofdrawings and the system or item they depict. Section 5 containsguidance for reviewing the most frequently encountered types ofengineering drawings and associated lists. Each reviewingactivity should establish its own acceptable quality level forEDP reviews in accordance with MIL-STD-105. Normally, a detailedreview of 15 percent to 20 percent of the total package issufficient to reveal the types of deficiencies to be foundthroughout. However, reviewing activities may elect to conductinoreextensive reviews of smallec or extremely complex drawingpackages. All drawings should be reviewed for compliance withIights-in-data ciauses of the ccnti.ict. ARY ~ra~~ngs foI.Indto benoncompliant shall be rejected. Before reviewing an entire EDPor all the drawings for an entire assembly, first conduct acompleteness review to ensure that all required drawings andsupporting data have been furnished. See 4.9.1 for instructionson how to conduct a completeness review.

4.6.3 Follow-on review. The Government reviewing activityshould meet with the contractor as needed to discuss, explain,and resolve the discrepancies noted in the ES (see 4.7).- The”contrdcrc.:shall revise the drawings as reauir- ‘ and submitcorrected drawings to the Government for revi .,..The Governmentre.~iewinq~ctivity shall conduct follow-on reviews of new orcorrected engineering drawings to ensure that they areacceptable. Additional engineering studies should be preparedas neederlto document discrepancies noted in follow-on reviews.Anj,cilscrepancies that cannot be resolved should immediately be:,r~~,ghtto the attention of the project manager Of the procurin9activity, Djring this review cycle, the reviewing activitysl!?j(j.ldcnqrdinate with the activity perfOKMlng Or witnessingconriq,ir.lt;orldudits to ensure that all drawing discrepancies“~~,jf?.~,.j.-;-,,.,:,+ea),)dit.sare corrected.

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MIL-HDBK-288 (MC)

4.7 ~. Once the Government reviewing activity has completedits technical review, it shall prepare an ES to document itsfindings. The ES lists all discrepancies discovered during thetechnical review. See 5.7 for detailed guidance on how toprepare and distribute an ES.

4.8 Final review. The final review is conducted on thecontractor’s final deliverable under the contract. The finaldeliverable, which may be in the form of original drawings,microfilm/aperture cards, nonreproducible hardcopies, or anycombination thereof, should not be submitted to the Governmentuntil the technical reviews have been completed and the drawingsfound technically acceptable. The final review should ensure thefollowing:

a, Previously documented discrepancies have been corrected,

b. The final deliverable is a complete package, and

c. The media on which the final deliverable is submittedconforms to the contractual requirements. the finalreview should not, but might, result in preparation ofan ES.

4.8.1 Review of previously -aocumel-]te~“.~&,=VU,,bAes. .A> J<-----.~-;

samplinq of the final deliverable should be reviewed to ensurethat pr~viously documented discrepancies, which the Contractor,had agreed to correct, were in fact corrected. ES’s fromprevious technical reviews should be used as guides to verify thecorrection of previously noted discrepancies.

4.8.2 Review for completeness. Also known as a top-down-break-down (TDBD), the completeness review is performed to ensurethat the EDP contains all the documents necessary to produce thesystem or items depicted. The TDBD is begun by examining theengineering drawing which depicts the entire assembly, end item,or system. This first-tier, or top drawing, lists second-orderdocuments such as detail drawings, parts lists, and Specifica-tions. These second tier documents may be listed in drawingnotes, parts lists, material blocks, or anywhere else on the faceof the drawing. Therefore, a review of parts lists alone is notsufficient to complete a TDBD. Each lower tier document may inturn list additional drawings, lists, or specifications. Eachmust be reviewed in the same manner, until all documentsbelonging to the EDP have been examined. An index list, datalist, or indentured (used on) list can be helpful in performingthe TDBD. If none of these lists are available, a list can be

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MIL-HDBK-288 (MC)

hand-generated to keep track of all cross-references. Alldoc,?nts cited in a drawing or associated list shall befu,.shed as part of the EDP except for industry specificationsand standards, military specifications and standards, ordocuments referenced parenthetically. The drawing package is notcomplete unless this requirement is met. The EDP should also bechecked against the requirements of the CDRL and thestandardization documents cited in each applicable DID. Thisreview is not conducted for technical substance, but rather toidentify and locate all documents required by the contract.

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4.8.3 Review of drawinq media. This review is conducted toensure that the media materials, legibility, and reproductiveq,ualityconform to the applicable contract requirements andspecifications.

4,8.3.1 Oriqinal drawinqs. If the contract specifies originaldrawings as the final deliverable, a sampling of the packageshould be examined for compliance with MIL-D-5480, MIL-D-8510 andDOD-STD-1OO. Particular attention should be paid to thelegibility of lines, numbers, letters and character data, and tothe reproducibility of the drawinns. The reviewing activityshould also ensure that when original drawings are ordered,origiu?l drawings are received. Duplicate originals shall not bedeliv..redto the Government (se? DOD-STD-1OO). ●

4.8.3.2 Master pattern drawinqs. When the contract requiresmaster patterns to be delivered as part of the drawing package,they should be reviewed for compliance with DOD-STD-1OO and MIL-STD-275.

4.8.3.3 Microfilm/aperture cards. If the contract specifies afinal deliverable in the form of microfilm copies of the drawinqpackage mounted in aperture cards, the media >hould be reviewed-for compliance with MIL-M-9868, MIL-C-9877, MIL-M-38761, and MIL-STD-804. A sampling of the microfilm should be examined toensure that the type, class, and kind (if applicable) are inaccordance with MIL-M-9868 as contractually imposed. The enticemicrofilm package should be reviewed for quality, density, andresolution. Aperture cards should be reviewed to ensure thatthey are of the correct type, class, and kind; that the microfilmis mounted correctly; that the header information printed on thecard reflects the drawing depicted on the microfilm; and that theinformation punched on the card agrees with the headerinformation.

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MIL-HDBK-288 (MC)

4.9 Recommending acceptance or rejection.

4.9.1 Acceptance of the EDP. The Government reviewingactivity shall ensure that both the technical and final reviewsof the EDP have been completed before recommending acceptance.If the reviewing activity determines that the engineering drawingpackage meets contract and specification requirements, it shallnotify the designated accepting activity in writing. Theaccepting activity, which is listed as the first addressee onblock 14 of the CDRL, shall notify the contractor that the EDPhas been accepted. This is done by signing the DD Form 250.

4.9.2 Relection of the EDP. The EDP should be rejected if in-process, technical, or final reviews reveal that it does not meetthe acceptable quality level specified by the reviewing/procuringactivity. If the reviewing activity recommends rejection, itshall notify the designated accepting activity by letter, with acopy of the ES to justify its recommendation. When the reviewingactivity recommends rejection, the contracting officer may electto invoke the withholding of payment clause in the contract. Thecontracting officer shall notify the contractor by letter thatthe ZDP has been rejected, and attach a copy of the ES asjustification. In any event, the contractor should be allowed areasonable period, specified in the CDRL, to correct the EDP and,.-resubmlt It zor tiovernment revie’w,’acceptance.

4.10 General quidance for reviewinq EDP’s. The followingitems should be reviewed on all level 2 and 3 engineeringdrawings:

Z!2.F2E Controlling Document

a. Drawing size and format DOD-STD-1OO

b. Drawing title (nomenclature) DOD-STD-1OOH6-1

c. Drawing number DOD-STD-1OO

d. Authorized signatures ANSI-Y14.I

e. Scale DOD-STD-1OO

f. Contract number in title block DOD-D-1OOO

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MIL-HDBK-288 (MC)

9. Applications blocks

h. Sheet numbering

i. Zoning

j. Security classification

P. Lettering

q. Legibility

r, Dimensions and tolerances

s. Graphic symbols

t. Abbreviations

u. Items covered by Governmentor industry standards

v. Identification of rights in data(limited rights ~efl-naq~=-..--,

w. Reference dimensions

x. Existing drawings, use and submission

Y. Part numbers

z. Part marking

aa. Company standacd documents

bb. Reference documents

cc. Standard supply system itemsused wherever possible

14

ANSI-Y14.1

DOD-STD-1OOANSI-Y14.1

ANSI-Y14.1

DOD-STD-1OO

DOD-STD-1OO

DOD-D-1OOO

DOD-STD-1OO

DOD-STD-1OO

DOD-STD-1OO

DOD-D-1OOO

DOD-D-1OOO

ANSI-Y14.5

DOD-D-1OOO

DOD-STD-1OO

MIL-STD-130

DOD-D-1OOO

DOD-D-1OOO

DOD-D-1OOO

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MIL-HDBK-288 (MC)

5. DETAILED REQUIREMENTS

5.1 Reviewinq for correct material and mechanicalspecifications.

5.1.1

a.

b.

c.

d.

e.

●f.

9.

h.

i.

j.

5.1.2

a.

Material specifications. See DOD-STD-1OO.

Make sure that material specific-.tionsar”elisted on thedrawing.

Check material specifications. Ensure requirements suchas class, grade, and type are specified. Ensure activespecifications are used.

Er,sure that the material specification correctlyidentifies the shape required, such as bar, sheet, rod,or tubing.

The tolerances and surface finishes given onspecifications for commercial items must agree withthose shown on the drawing for nonmachined dimensions.

Evaluate qualities in regards to plating, painting,welding and hardening.

Industry standard stock materials must be specified,when practical.

Ensure that proper material is used on die formed parts.Some heat treated materials are not practical for dieforming. Other materials are suitable and aging willmeet hardness requirements.

Ensure that material has been specified in the propercondition to facilitate machining operations.

Check the type of raw material for comparability withprocessing and machining techniques, stressrequirements, and direct contact with dissimilarmaterials.

Check the drawing notes for heat treatment and hardnessspecifications and requirements.

Castinqs and forginqs. Check the following items:

Ensure that there are separate views of a rough castingor forging and the finished part.

15


b.

c.

d.

e.

f.

9.

h.

i.

1.

k.

1.

m.

5.1.3

MIL-HDBK-288 (MC)

Make sure that the drawings specor casting to be used.

fy the type of forging

Ensure the drawings specify draft allowances.

Specified tolerances must be compatible with the type ofcasting or forging and its intended use.

Datum planes must be specified.

Ensure that the location and dimensions of toolingpoints are specified.

Dimensions of draft surfaces must be taken from moldlines.

Duplicate dimensions should not be shown on both thecough and finished part drawing unless one of thedimensions is marked “FOR REFERENCE.”

Ensure that the grain direction of forging is indicatedon the drawing.

~~s!.]r~that all materials, including alloys, areproperly specified. See DOD-STD-1OO.

Ensure that drawings specify the parting lines ofcastings.

Ensure that the drawings show the location anddimensions of test coupons on forgings or castings.

Ensure that inspection procedures are specified for thecastings or forgings shown on the drawings.

Mechanical specifications. See DOD-STD-1OO.

5.1.3.1 General requirements.

a. Check fits between all mating parts to ensure thatmaximum tolerance build-ups will allow parts to assembland operate without interference.

b. Check all dimensions to ensure that material can bemachined with standard tools.

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MIL-HDBK-288 (MC)

All machining requirements suchcountersinks, counterbores, anddefined and specified.

Check to ensure that all mating

as chamfers,radius must be properly

holes for connectinghardware such as rivets and bolts are within tolerancelimits.

Ensure that lubrication fittings have been provided, asneeded, at convenient and accessible places.

5.1.3.2 Thread data. See ANSI-Y14.6.the following:

a. Ensure that pipe threads are not

Check thread data for

used as pressure seals.

b. Ensure adequate thread engagement. Bolts must be longenough to provide sufficient thread engagement forwashers, nuts, and safety wire, as appropriate.

c. Countersunk or chamfered first thread.

d. Check uniformity in depth of tap drills and thread depthfor greater efficiency in production. Blind tap holessnouid be avoided.

5.1.3.3 Sprinq data. Check spring data for the followinginformation:

a. Ensure that the drawings specify the type of springs tobe used.

b. Wherever possible, springs that conform to an acceptedGovernment or industry specification or standard shouldbe used.

c. Where nonstandard springs are used, ensure that thedrawings depict their wire diameter, mean springdiameter, spring rate, unstressed length, stressedlength, and finish.

5.1.3.4 Gear data. See ANSI-Y14.7.1 and ANSI-Y14.7.2. Checkgear data for the following:

a. Ensure that drawings specify the type of gears to beused.

17


MIL-HDBK-288 (MC)

b. Wherever possible, gears that conform to an accepted oGovernment or industcy specification or standard should’be used.

c. Where nonstandard gears are used, ensure that.thedrawings depict their pitch, pitch diameter, shaftdiameter, thickness, material used, finish, and anyspecial lubrication requirements.

5.1.3.5 Bearinq data. Check bearing data for the followinginformation:

a. Ensure that the drawings describe the types of bearingto be used and their rating life.

b. Wherever possible, bearings that conform to an acceptedGovernment or industry standard or specification shouldbe used.

c. Where nonstandard bearings are used, ensure that thedrawings describe their dimensions, load rating, speed,and lubrication requirements.

5.1.4 Sheet metal data. ~hec!ifor ~~,em:nirnumbend allowanceand dimensions of parts formed from sheet metal. Drawings shouldshow dimensions from outside mold lines. To eliminate the need ●for calculations, drawings should show the true dimensions ofbend allowances instead of angle dimensions. See ANSI-Y14.5.Complicated sheet metal and weldment parts should be replacedwith die and investment castings wherever practical. Evaluatestamping, extruding or fabricating in lieu of casting andforgings. Ensure that welding requirements conform to applicablestandards.

5.1.5 Plating and finishinq data. Check plating and finishingrequirements for the following:

a. Ensure that tolerance and thickness of plating is inaccordance with the applicable specification.

b. The drawings must specify the dimensions and surfacefinish requirements of plated parts.

c. Precious metal plating requirements should be eliminatedwhere practical to reduce cost.

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MIL-HDBK-288 (MC)

● d.

e.

f.

Avoid plating only selected portions of parts whereverpossible.

Drawings must specify if metal parts will be deoxidized,anodized, chemically filmed, barrier coated, sacrificialcoated, or treated in some other manner. If more thanone treatment method is specified, ensure that thetreatments are applied in the proper order.

Check drawing notes to make sure that magneticinspection i= required for high stress heat treatedparts and low microfinish parts prior to grinding.

5.2 Reviewinq assembly drawinqs. Check the following:

a.

b.

c.

o d.

e.

f.

9-

h.

i.

j.

k.

1.

Ensure that the locations of name plates are shown.

Assemblv drawinqs must show all peculiar assembly oradjustm~nt inst~uctions.

Ensure that the assembly drawings refer to allassociated documents and drawings.

There must be sufficient views to show the relatbetween each part.

Assembly part numbers must be properly marked.

onsh p

Assembly drawings must show tolerances for output andinput connections.

Ensure that ins~ection and test requirements arespecified for i~ems depicted in th~ drawing. See DOD-D-1000.

Assembly drawings must identify inseparable assemblies.

Ensure that assembly drawings identify and depictattaching hardware such as nuts, bolts, and rivets.

Location and orientation of parts must be shown.

Ensure that tolerance buildups do not cause interferenceduring assembly, disassembly and operation.

Ensure that required quantities are correct.

19


MIL-HDBK-288(MC)

m. Assembly drawings must depict correct assembly andreference dimensions.

n. Ensure that the reference designators used on theassembly drawing are used consistently on all associateddrawings and related lists.

o. The identification and quantity of parts shown on theassembly drawing must agree with the parts lists.

5.3 Reviewinq detailed drawinqs. See ANSI-Y14.3. Check thefollowing:

a.

b.

c.

d.

e.

f,

5.4

5.4.1

Detailed drawings must completely depict the entire partor assembly shown.

Ensure that there are sufficient views to adequatelydefine the item.

Ensure that all dimensions are taken from physicalfeatures. See ANSI-Y14.5.

Detail drawings should not show the dimensions of hiddenl~m~s. See ANSI-Y14.5.

Ensure that datum planes are properly defined. SeeANSI-Y14.5.

Ensure that mono-detail drawings depict only one item.

Reviewinq drawinqs of electrical and electronic systems.

General. See DOD-STD-1OO and ANSI-Y14.15. Review alldrawings of electrical and electronic systems for the followinginformation:

a. Ensure that wires are properly identified by size,specifications, and coding.

b. Sleeving must be properly identified. Sleeving shouldbe over connections to ensure adequate protection wherea possibility of shorting exists.

c. Check notes for correct soldering specifications.

d. Check that floating connectors are used only wherenecessary.

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MIL-HDBK-288 (MC)

o e. Check for conformal coating, where required, to provideadequate resistance to leakage.

f. Check that the drawings show the polarity of diodes andcrystals.

9. The orientation of transistors and other parts must bespecified with respect to a fixed reference point.

h. Check for hermetic sealing of connectors, whererequired.

i. Check to see that requirements for lacing, sleeving orwrapping are identified.

j. Analyze and evaluate assembly drawings, wiring diagrams,printed wiring board drawings, and schematic diagramsfor compatibility. Each drawing or diagram should referto all related drawings or diagrams. All referencedesignators must be consistent.

k. Analyze and evaluate theconnectors. Ensure that

m. All levels of electricalmust adequately describeitems they depict.

service rating on allall connectors are compatible.

--—------- --- -.=-k..UJlll+J1t~llL>LUL 2c2LCLY.

or electronic assembly drawingsthe test requirements for the

5.4.2 Wirinq diaqrams and wirinq harness drawinqs. Check thefollowing:

a. Wiring diagrams and wiring harness drawings should beused where appropriate. See DOD-STD-1OO.

b. The physical arrangement of wire routing componentsshould be consistent with their layout in associateddrawings.

c. Ensure that component terminals are identified in wiringdiagrams. Drawings must conform to Section 4 of MIL-S1’D-275.

d. Ensure that the use of reference designators isconsistent with related drawings.

21


MIL-HDBK-288 (MC)

e. Ensure that wiring diagrams identify all input andoutput signals.

f. Ensure that wiring diagrams identify the functions ofall test points.

9. Ensure that the unit or subunit designator is noted onthe drawing and is consistent with related documents.

h. Ensure that the drawing identifies grounds and showstheir location.

i. Wiring diagrams must refer to associated assembly andschematic drawings.

j. Make sure that the drawings detail the use of wirenumbers or color codes, and that their use is consistentwith that of related drawings and associated lists.

5.4.3 Schematic, loqic, and interconnection diaqrams. Checkthe following:

a.

b.

c.

d.

e.

f.

9.

h.

IEnsure that diagrams are prepared for each subunit. I

Diagrams must identify inputs and outputs and show theirtolerances. ●Ensure tha’tparts are shielded where grolinded.

Ensure that diagrams show the directional alignmentall components, and that it is consistent with whatshown on associated documents. This is especiallyimportant for components which are affected by polarity,such as batteries, diodes, and rectifiers.

ofis

Separately replaceable assemblies must be identified byan appropriate reference designator.

Ensure that all components are identified by referencedesignator and type number.

Ensure that schematic drawings show the capacity ratingsof safety devices such as fuses and circuit breakers.

Values, ratings, and tolerances must be shown for allcomponents.

22

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MIL-HDBK-288 (MC)

o i. Ensure that schematic drawings identify the functions oftest points.

j. Logic symbols must be used per ANSI-Y14.15.

k. Reference designators must be used per DOD-STD-1OO.

1. Ensure that electronic symbols are used per DOD-STD-1OO.

m. Ensure that schematic drawings refer to associateddrawings.

n. Ensure that terminals of relays, plugs, and otherConnection.5 are identified.

5.4.4 Printed wirinq board drawinqs. Check the following:

a. Analyze and evaluate the printed wiring design forconformity to applicable specifications.

b. Printed wiring fabrications must conform to applicablespecifications.

c. Ensure that drawings depict wiring boards in detail, and

oidentify all components. Drawings must CO~fGiTt tGSection 4 of MIL-STD-275.

d. Drawings must be laid out on a grid system.

e. Both sides of a wiring board, including reductiondimensions, must be shown on the same wiring boarddrawing. Ensure that front-to-back registration pointsare defined, precisely located, and adequatelycontrolled.

f. Ensure that marking information depicted on the wiringboard drawing is consistent with what is shown onassociated drawings.

9. Ensu?e that the wiring board makes reference to thecorresponding schematic and assembly drawing.

h. The board and assembly number must be the same as thenumbers shown on the corresponding assembly drawing.

i. The drawing must specify and depict conformal coating,when required.

23


MIL-HDBK-288(MC)

j.

k.

1.

ml.

n,

o.

P.

q.

r.

s.

t.

u.

v.

w.

Reference designatorsconsistent with thoseassociated lists.

Ensure that plug keys

Wiring board drawingsnumbers.

shown on theshown on the

board drawing must beassembly drawing and *I

and terminals are identified.

should not contain subunit

Ensure that wiring board drawing notes include thesubunit prefix.

Ensure that masking is not used as a guide for holelocations.

Make sure that the dimensions and tolerances of allholes are shown. See DOD-STD-1OO.

Ensure that the master pattern drawing is laid out perDOD-STD-1OO.

Ensure that1495.

When wiringensure that

multilayer boards are depicted per DOD-STD-

board drawings are produced in digitai form,their description and format are in

accordance with ANSI/IPC-D-350.●

SeDarate views must be shown for double sided and Imu~tilayered boards.

Ensure that wiring board drawingsquality assurance (QA) previsionsthe items they depict.

Ensure that the circuitry patternschematic drawing.

include adequatefor the manufacture of

agrees with the

Ensure that fixed points on printed wiring boards areused as references to define the locations, width, anddimensions of conductors.

Ensure that jumper wires are eliminated on productiondrawings.

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MIL-HDBK-288 (MC)

o 5.5 Reviewinq control drawinqs.

5.5.1 Specification control drawings (SCD).

5.5.1.1 Criteria for designation. To qualify as an SCD, theitem depicted must meet the following criteria:

a. It must be of an unmodified commercial type, availableto both Government and industry on an unrestrictedbasis.

b. The item must not ha.~ebeen developed for use in theequipment represented by the drawing package underreview.

c. The manufacturers’ names, addresses, identificationcodes, and item identification numbers must be shown onthe SCD.

d. The drawing must list two or more known sources.

5.5.1.2 Reviewinq SCD’S. Analyze SCD’S for the followinginformation:

c.

d.

e.

ThLey~~a~~ @sc~os~, ~~ an~licable, item configuration,-..Ldimensions of envelope, mounting and mating dimensions,interface dimensional characteristics, and their limits.

The SCD must show inspection and acceptance testrequirements, performance, reliability, maintainability,environmental and other functional requirements, asnecessary to ensure identification and adequatecompetitive reprocurement of an interchangeable item.

If an electrical, electronic, or other engineeringcircuit is involved, a schematic, connection or otherappropriate drawing shall be included or referred to bythe drawing to provide sufficient information to markexternal connections.

SCD numbers are administrative control numbers and shallnot be marked on the part. The SCD numbers are used toidentify the item on other drawings or documents.

Qualification testing of items in advance of procurementaction is not a prerequisite for including an item on anSCD.

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MIL-HDBK-288 (MC)

f.

9.

h.

i.

j.

5.5.2

If a decision cannot be made from the informationavailable, the manufacture of the item or activitysubmitting the drawing should be contacted to verifythat the item meets the criteria for a SCD.

All sources of supply should be checked to verify thatthe part numbers listed on the drawing correspond to theitem depicted on the drawing, and are currentlyavailable.

The manufacturers’ part number becomes the item’sidentification number.

The notations “SPECIFICATION CONTROL DRAWING” and“IDENTIFICATION OF SuGGES’r.EDSOURCES OF SUPPLY ...” mustappear on the drawing per DOD-STD-1OO.

SCD numbers are not marked on the parts.

Source control drawinqs (SOCD)

5.5.2.1 Criteria for designation. A SOCD defines an itemwhich is procurable only from certain vendors for reasons such asthe ioiiowing:

a. A vendor has a special technique which will make hisproduct work in a system where others will not. The keyelements may be identifiable.

b. There is a specific, critical application, andsubstitute vendors shall not be used without priortesting, evaluation, and approval. Critical factors mayinclude performance, installation, interchangeability orreliability, and must be spelled out o:.the drawing.

c. The notation “SOURCE CONTROL DRAWING” must be on thedrawing. See DOD-STD-1OO.

5.5.2.2 Reviewinq SOCD’S. SOCD requirements are identical tothose for SCD’S except for the following differences:

a. Items must be tested and prequalified for inclusion inSOCD’S.

b. The drawing shall include the following note: “Only theitem described on this drawing, when procured from thevendor(s) listed hereon, is approved by (name and

26

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MIL-HDBK-288 (MC)

address of cognizant design activity) forarmlication(s] sDecified hereon. A subst:

use in thetute item

skill-not be use~ without prior approval by (name ofcognizant design activity) or by (name of Governmentprocuring activity).”

c. The drawing shall list under the heading “APPROVEDSOURCES OF SUPPLY”, the manufacturer’s name, address,and identification code, and the part number of eachitem that has been tested and approved for use in thespecific applications stated on the drawing.

d. Whenever another vendor’s item is tested and qualifiedfor the stated applications or when a new criticalapplication is found and all vendor items that are citedon the drawings are approved for use in the new criticalapplication, the drawing may be revised to show the newvendor or application. Each new vendor added must beapproved for all stated applications.

e. SOCD’S become the part identification numbers and aresubsequently used to identify the item on other drawingsor documents. When more than one vendor is listed on anSOCD for items that are repairable and the repair partsare noc interchangeable ‘betweenone vendor’s item andanother, each vendor’s item shall be assigned a uniquesuffix of the SOCD number.

f. Ensure that “SOCD.”and the drawing number are marked onthe part. The SOCD number becomes the item’s partnumber . See DOD-STD-1OO.

5.5.3 Selected item drawinqs. Selected item drawingdisclosure requirements are identical to those of SCD’S exceptfor the differences listed below:

a. The drawing must contain the notation “SELECTED ITEMDRAWING.”

b. Compiete details of the selection criteria shall bedescribed, such as fit, tolerance, performance andreliability.

c. When a vendor document is referred to in the selecteditem drawing, it shall be submitted with the drawingpackage. If the document is unobtainable, the selecteditem drawing shall contain sufficient information toidentify that item before selection.

27


MIL-HDBK-288 (MC)

d. The part number, and the manufacturer’s name, addressand identification number shall be included in thedrawing package.

e. The original part number must be obliterated and theselected item drawing number shall become the partnumber of the selected item itself. See DOD-STD-1OO.

5.5.4 Altered item drawings. Altered item disclosurerequirements are identical to those of SCD’S and selected itemdrawings except for the differences listed below:

a. The drawing shall include information necessary toidentify the item prior to its alteration, including theoriginal part number and the name and address of theoriginal source. The name and address of the sourceneed not be furnished if the original part is aGovernment or industry standard item.

b. When a vendor activity document is referred to, thevendor data shall be submitted along with the altereditem drawing. If the vendor or original design data isunobtainable, the altered item drawing shall containsufficient information to identify that item prior toits alteration.

c. The notation “ALTERED ITEM DWWING” must appear on thedrawing.

d. The original part number must be obliterated.

e. Altered item drawing numbers shall become the partnumbers of the altered items. See DOD-STD-1OO.

5.6 Reviewinq lists associated with the EDP.

5.6.1 Parts lists (PL’s). See DOD-STD-1OO. Check thefollowing:

a. If separate PL’s are used, make sure their format iscorrect.

b. If separate PL’s are used, ensure that PL numbers arecorrect.

c. If an integral PL is used, ensure that the format iscorrect. Refer to ANSI-Y14.1.

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MIL-HDBK-288 (MC)

d. Ensure that part or identifying numbers are correct(including items controlled by military specifications).

e, “Find numbers” or “reference designators” used on the PLmust be consistent with those shown on associateddrawings.

f. PL’s may be revised only in accordance with DOD-STD-1OO.

9. PL’s must specify quantities wherever possible.

h. Bulk items must be identified by a discrete identifierinstead of quantity.

i. Ensure that “as required” (AR) quantities are used Onlywhere appropriate.

j. Items that are not adequately defined by a Government orindustry specification must be depicted in a control orother type drawing.

k. Ensure that parts depicted on specification control,source control, altered item, and selected item drawingsare properly identified per DOD-STD-1OO.

1. When PL’s are produced on an automatic data processingsystem (ADPS), ensure that they are in the formatspecified by DOD-STD-1OO.

m. Ensure that every item on a drawing is also on a PL.

n. Verify that military and industry standard part numberscorrectly identify the parts being used.

5.6.2 Data lists (DL’s). See DOD-STD-1OO. Check thefollowing:

a. Ensure that the format is correct.

b. Ensure that the DL contains all drawings, documents, andassociated lists.

c. Ensure that DL numbers are correct.

d. Ensure that the DL is revised per DOD-STD-1OO.

e. Ensure that documents are sequenced per DOD-STD-100.

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MIL-HDBK-288 (MC)

f. Ensure that DL’s ire prepared forsubassembly, or unit as required.

each major assembly,

9. Ensure that DL nomenclature is consistent with that usedon the assembly drawing.

5.6.3 Index lists (IL’s). See DOD-STD-1OO. Check thefollowing:

a. Ensure that

b. Ensure that

c. Ensure that

the format is correct.

IL numbering iscorrect

documents are sequenced

per DOD-STD-1OO.

per DOD-STD-100.

d. IL’s must be prepared for each major assembly or systemas required by the contractual instrument in effect.

e. Ensure that each IL contains all applicable DL’s andIL’s.

f. Ensure that the nomenclatures on IL’s agree with thoseon the assembly drawing,

5.7 Preparinq an ES.

5.7.1 Documenting discrepant findinqs. Whenever an in-processor final review of an EDP is completed, the Government reviewingagency shall document all discrepant findings for presentation tothe contractor. The ES provides a method for documenting andcompiling drawing discrepancies in a logical format. The ESformat which follows may be used as a standard by DOD activitiesand should be briefed to the contractor during the contractorindoctrination (see 4.5).

5.7.2 Cover sheet. The first page of the ES contains thefollowing information (see figure 1):

a. System nomenclature, contract number, contractor, ESvolume number, and date prepared are centered in thecover sheet.

b. The name of the Government reviewing activity, address,and telephone number are located in the lower leftcorner of the sheet.

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MIL-HDBK-288 (MC)

● 5.7.3 Introduction. The ES introduction contains thefollowing information (see figure 2):

a.

b.

c.

d.

e.

f.

9.

h.

oi.

5.7.4nature,

Authority for performing the review.

System nomenclature.

Contractor.

Contract number.

CDRL drawing requirements.

Purpose of the technical review.

Statements indicating that comments concerningdiscrepant findings may also .apply to documents thatwere not inspected during the review and that thecontractor is responsible to inspect the entire EDP andcorrect similar deficiencies.

The scheme by which discrepancies are presented in theES (TDBD order, numerical sequence, etc.).

Actiorl to be taken by the contractor.

List of qeneral comments. Comments of a repetitivewhich pertain to five or more drawings, should be written

only once as general comments. The general comments list willprecede the general comments section and identify all the generalcomments generated during the review. The title “List of GeneralComments” is placed at the top of the sheet, and columns entitled“General Comment Letter” and “Title” will follow. Each generalcomment shall be assigned a letter in sequence (see figure 3).

5.7.5 General comments. This section fully describes eachdiscrepancy, citing references and examples. If annotateddrawings are to be returned to the contractor, the discrepantportion of each drawing or associated document shall be annotatedby the letter of the appropriate general comment squared in red.General comment sheets shall contain the following information(see figure 4):

a. The title “General Comment X“ (X representing theappropriate letter) shall be centered at the top of thepage, along with the title of the comment.

31


MIL-HDBK-288 (MC)

b. A brief narrative will follow, describing thediscrepancy and citing the specification, standard, orDID which has been violated.

c. The phrase, “examples of this condition can be found onthe following drawings” shall follow the narrative,along with a list of drawing numbers to which thecomment applies.

5.7.6 A list of reviewed drawinqs to which only qeneralcomments apply. This page shall consist of the following (seefigure 5):

a. The title “List of Reviewed Drawings to Which OnlyGeneral Comments Apply” is centered at the top of thepage, followed by columns titled “Drawing Number,”“Drawing Title,” “Revision,” and “General CommentLetter(s) .“

b. Drawings should be listed in alpha-numeric order.

5.7.7 Index of reviewed drawinqs to which specific commentsi!F@i. This page cross-references each drawing against which aenc.~ifie“r-- . ..- co!!n!entapplies to the page in the ES on which thecomment can be found. This index is only needed when specificcomment sheets are in TDBD sequence (see 4.8.2.). It shallcontain the following (see figure 6):

a. The title “Index of Reviewed Drawings to Which SpecificComments Apply” at the top of the page, with columnstitled “Drawing Number,” and “Page” underneath.

b. Drawings should be listed in alpha-numeric sequence.

5.7.8 Specific comment sheets. Prepare a specific commentsheet for each reviewed drawing on which discrepancies werenoted. The sheets can be arranged in alpha-numeric sequence orTDBD order (see 4.8.2). Each sheet shall consist of thefollowing (see figure 7):

a. The drawing title in the upper left corner of the page.

b. The drawing number and revision letter in the upperright corner of the page.

e

c. The specific comments are listed consecutively on theleft margin by number. If annotated drawings will be

32


MIL-HDBK-288(MC)

returned to the contractor, each specific comment mustcorrespond to an annotat~>darea on the drawing,indicated by the number squared in red.

d. Each specific comment will briefly describe thediscrepancy and cite the specification, standard, or DIDwhich has been violated, and if annotated drawings arenot going to be returned to the contractor, indicatewhere on the drawing the discrepancy exists.

e. After the specific comments are listed, all generalcomments which apply to the drawing are cited by letter.

5.7.9 List of missinq documents. This list cites alldocuments that are required as part of the EDP but which were notfurnished by the contractor. The list is generated as a resultof the TOED (see 4.9.1). The page shall consist of the following(see figure 8):

a.

b.

5.7.10

The title “List of Missing Drawings” is centered at thetop of the page, with columns titled “Document Number,”“E’SCM,”“Title,” “Referenced on,” and “Location” listedbelow. The “Referenced on” column indicates whatdocument cites the missing document, and the “Location”

+.a+-~te$ ~here the mi~sinq document was citedCol.unm .,,”.”(parts list, note, or material block).

Missing drawings should be listed in alpha-numericsequence.

IL/DL discrepancies. An IL/DL discrepancy form shallbe DreDared for each IL or DL on which discrepancies were noted.The”li~t number, revision letter and nomenclature shall be at thetop of the page, with columns titled “Item,” Application,” andAction Required” placed below (see figure 9).

5.7.11 Distribution of the ES. The ES should be sent to theprogram office responsible for the procurement of the systemunder review. The program office shall forward the ES to thecontractor via the contracting officer. The reviewing activityshould retain a copy of the ES and a copy of the annotateddrawings until the final delivery of the EDP is accepted by theGovernment. If annotated drawings are being returned to the

33


MIL-HDBK-288 (MC)

contractor, they should be sent with a cover letter cautioningthe contractor not to begin correcting the EDP until directed bythe Government contracting officer.

Preparing activity:NAVY - MC

Project No. DRPR-N275

I

I

34


MIL-HDBK-288 (MC)

ENGINEERING STUDY

(EQUIPMENT NOMENCLATURE)

CONTRACT XXXXXX-XX-X-XXXX

(CONTRACTOR)

ENGINEERING STUDY VOLUME XX

(DATE PREPARED)

PREPARED BY:

(Government Review Activity Name)

(Address)

(Address)

TELEPHONE (XXX) XXX-XXXX

Figure 1, Sample Format of an EngineeringStudy Cover Sheet

35


MIL-HDBK-288 (MC)

INTRODUCTION

(Government Procuring Activity or Program Office) has as-signed the (review activity) the responsibility to review theEngineering Drawings and Associated Lists submitted for the(equipment nomenclature). These drawings and lists weresubmitted by (contractor) under Contract XXXXXX-XX-X-XXXX as alevel X package in accordance with requirements of DOD-D-1OOO.

The review was conducted to evaluate the technical contentof the engineering drawings and their compliance with the con-tract requirements. The comments in this engineering study areintended to point out deficiencies found in the engineeringdrawings. This review is not intended to be all-inclusive, butrather to point out examples of typical errors or omissions whichrequire corrections. There may be additional discrepancies tothose listed herein and the listed discrepancies might be foundthroughout the drawing package. The contractor is requested tomake corrections throughout the entire package before resub-mitting the drawings. The contractor is only required to resub-mit new or corrected drawings for review.

..{., ~= Sk.dy is .present~d ~n the format of General Commentsand Specific Comments. General Comments are repetitive in natureand are applicable to many drawings. Letters are used todesignate repetitive comments and a list of General Comments ispresented at the beginning of the study. Specific comments applyonly to individual drawings, are designated by numbers, and arepresented on a separate page for each drawing reviewed. An indexis provided which cross-references discrepant drawings withspecific comment sheets. Marked drawings were returned underseparate cover, with the number or the letter of the applicablecomment squared in red. (This last sentence is only included ifannotated drawings are being returned to the contractor).

I

o

I

Figure 2 . Sample Format of an Introduction to an Engineering Study I

36e

“ ,,,,,,.*<,,., ,,,, ,,,.


MIL-HDBK-288 (MC)

LIST OF GENERAL COMMENTS

GENEltALCCM4MENTLETTER TITLE

A Specification Error MIL-P-23377

B Specification Error MIL-F-14072

c Specification Error TT-E-485

D Specification Error QQ-A-200

E Removal of ProprietaryStatements

Figure 3. Sample Format of a List of General Comments

37


MIL-HDBK-288 (MC)

GENERAL COMMEtiTA

SPECIFICATION ERROR MIL-P-23377

Prime Finish is specified as MIL-P-23377, Class 2 on the drawing,but no Class 2 is listed in MIL-P-23377. MIL-P-23377 requiresthat Type and Component be specified for epoxy-polyamide primercoatings. Please rectify.

The following documents are examples of

Drawing130533

this problem:

RevT

130534 c130535 F130536130537 B I

●

I

Figure 4. Sample Format of a General Comment, Engineering study

38 0

m“,,-,,/ ,.ti.,,,, ,.,,,.,,“


MIL-HDBK-288 (MC]

DRAWINGNUMBER

130566

130570

130595

130634

130697

130710

139418

LIST OF REVIEWED DRAWINGS TO WHICH ONLYGENERAL COMMENTS APPLY

DRAWINGTITLE

Adapter

Conductor Assy

Clamp, Bolt

Outer Cover

Mount

Back Panel

Pivot

REVISION

B

F

G

A

c

GENEIU+LCONNENT LETTER(S1

A,B6C

A&B

A&B

A,B&C

ArB&D

A&B

A&B

Figure 5. Sample Format of a List of Reviewed Drawingsto Which Only General Comments Apply

39



MIL-HDBK-288 (MC)

o PRINTED WIRING ASSEMBLY 1P 130490Rev - A

1. Sheet 1, zone B-5, indicates that five holes are to beinstalled. Shouldn’t this be seven holes?

2. Sheet 1, zone A-7: Find Number not indicated.

3. Page 40, paragraph 5, line 5 of Drawing EL 130558 indicates“K13 Xl to J5c” which does not agree with this drawing. Pleaserectify.

NOTE : General Comment A also applies to this drawing.

Figure 7. Sample Format of a Specific Comment Sheet

41



MIL-HDBK-288 (MC)

INDEX/DATA LIST DISCREPANCY FORM

List No. Revision——.—..——.— ——---

Nomenclature _—

—.. ————————

Item Application Action Required

——— ——----- ——

Figure 9. Sample Format of an Index List/Data ListDiscrepancy Form

43


INSTRUCTIONS:Intcontinuingefforttomakeourchadardizatioadocumanubetter,theDoD pmxideatbkaformforw insubmittingeommea~tndsutioruforimpmxemoah.‘Allusersofmilitarystandardizationd— nu - inmtcd10providesuggestions.TbiIformmaybodetxbed,foldedalongthelinesiadic8ted,tapedslongtheI.axaedge(DONOT .sTflL,?),md

omibd. In block5,beu vccific= pouibletboutPuticulsfproblema?w suchM wardingwhichrequirediatmpretation,w-km rigid,ratrietkse,la, unbicmous,orwasLxompatibh,andgiwProp-adwording~w- tiich-Ad alleriaMthe

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nt.Ifblock7isfdlrdout,anowlcdgementwillbermiledtoYouwithin30days to Id YouknowthatYourcommcnuwemr=ei~dand are being

considered.

,VOT,E;,Tbisform-y notbeUA torequutcopmsofdocuments,nortorequestwoiverc,deviations,orckificationO(~W~l~tiOnmq~emenuon‘SUIWItCoatmcU.Commentisubmittedont.bicformdonotconstituworimplyauthorizationtowaiveanypotionoftherefermceddmunun~(s)ortoamendcontnctudreqtdremenu.

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DEPARTMENTOFTHENAVY

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OPFKIALBuS?MES●!MALTYFOn●RIVATEWE KIM BUSINE:SNoR~PLYMAIL

FIR57CLASS WASHINGTOND C

PO=AGEWILLBEPAIDBYTHEDEPARTMENTOFTHENAVY

Commandantof the Marine CorpsHeadquarters,U.S. MarineCorpsAttn: Code Lt4A-1Washlngcon,D. G. ?0380


STANDARDIZATIONDOCUMENT IMPROVEMENTPROPOSAL(SeeImmcdau-R- S&}

OOCU-EUTN2MmEn 2,OOCUMEUTTITLS141L-HDBK-288(t4C) REvIEwANDACCEPTANCEOF ENGINEERINGDRAWINGPACKACES

L MAMEOFSUOWITI’lNOORGA?II7.ATION &TYPEOPORGANIZATIONfMO’bw)

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REMARKS

LNAM orSUBMITTERA.U1Fb’,t,Ml)-Ovti.md b,WORE7fLCP*0N6Nuueenfhetihm.cd)-0,,8.”.1

94A,LIM0AOD.ES,Sn.,’C,W,SI.W,ZIPCd,-Oo,lo”ti &DATE0?SUBMISSION(YYMMDDI

DD AOR’.1426 ?REvt0u3COITlON19OPSOLUC,

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