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Rotorcraft ActivityU S Department
o Transportaon SurveyFederal AviationAdministration
AD-A236 698 1989
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91-01338
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O Rotorcraft ActivityUS Depnrn
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1989
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Availability is unlimited. Document may be released to the National TechnicalInformation Service Springfield, Virginia 22161, for sale to the public.
For sale by the Superintendent of Documents, U.S. Government Printing OfficeWashington, D.C. 20402
Tedhnical Report Doctmtettion Page
1. Report No. 2. Government Accession No. 3. Recipient's Catalog No.
4. Title and Subtitle 5. Report Date
ROTORCRAFT ACTIVITY SURVEY 1989Summary Report 1989 Data
6. Performing. Organization CodeAMS-420
7. ALthor(s) 8. Performing Organization Report No.Executive Resource Associates, Inc. Subcontractor: Adsystech, Inc.2011 Crystal Dr., Suite 813 8601 Georgia Ave., Suite 801Arlington, VA 22202 Silver Spring, MD 20910
9. Performing Organization Name and Address 10. Work Unit No. (TRAIS)
Federal Aviation AdministrationOffice of Management Systems 11. Contract or Grant No.800 Independence Avenue, S.W. DTFAO1-Y-88-01026Washington, D.C. 20591
12. Sponsoring Agency Name and Address 13. Type of Report and Period Covered
U.S. Department of Transportation Special One-TimeFederal Aviation Administration Calendar Year 1989800 Independence Avenue, S.W.Washington, D.C. 20591 14. Sponsoring Agency Code
15. Supplementary Notes
16. Abstract
This report presents the results of a special one-time Rotorcraft Activity Survey. The survey is conducted by the FAAto obtain information on the activity of the United States registered rotorcraft fleet.
The report contains breakdowns of active rotorcraft, annual flight hours, average flight hours and other statistics byrotorcraft type, manufacturer/mode group, region and state of based aircraft, and primary use. Also included are lawenforcement and public use rotorcraft, Lifetime airframe hours, engine hours, miles flown estimates, and estimates ofthe number of Landings.
17. Key Words 18. Distribution Statement
Rotorcraft, Rotorcraft Activity, Rotorcraft Use, Hours Flown, Miles Flown DOCUMENT IS AVAILABLE TO THEPUBLIC THROUGH THE NATIONALTECHNICAL INFORMATION SERVICE,SPRINGFIELD, VIRGINIA 22161
19. Security Classif. (of this report) 20. Security Ctessif. (of this report) 21. No. of Pages 22. Price
Unclassified Unclassified 153
Form DOT F 1700.7 (8-72) R; 0ution of completed pow authorized
ORDER INFORMATION
Addresses are listed below for ordering purposes.
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MANAGEMENT STANDARDS AND STATISTICS DIVISION PUBLICATION INFORMATION
Below is a list of the publications compiled by the Management Systems,Management Standards and Statistics Division. Questions may be directed to usby phone: (202) 267-9938, or by writing Federal Aviation Administration,Management Standards and Statistics Division (AMS-400), 800 Independence Avenue,S.W., Washington, DC 20591.
Airport Activity Statistics of Certificated Route Air Carriers is a jointpublication of the Federal Aviation Administration (FAA) and the Research andSpecial Programs Administration (RSPA). RSPA furnishes airport activity dataon certificated route air carriers; FAA organizes/publishes it. Included in thedata are passenger enplanements, tons of enplaned freight, express and mail.Both scheduled/nonscheduled service and domestic/international operations shownby airport and carrier are also included. Breakdown of data includesdepartures/enplanements/cargo/mail by airport, carrier and type of operation, andtype of aircraft.
Reporting period: Calendar YearLatest edition: 1989 dataOrder from: Government Printing Office or
National Technical Information Service
Date 1990 informationwill be available: July 1991
Date next publicationis available: September 1991 (1990 data)
Person to contact: Patricia Beardsley
Census of the U.S. Civil Aircraft is an annual publication that includesstatistical data on the registered civil fleet, air carrier aircraft, andgeneral aviation aircraft--both registered and active, detailed reports forgeneral aviation aircraft by owner's state and county, and registered aircraftby make and model.
Reporting period: Calendar YearLatest edition: 1989 dataOrder from: U.S. Government Printing Office or
National Technical Information Service
Date 1989 Informationwill be available: May 1991
Date next publicationis scheduled: August 1991 (1990 data)
Person to contact: Patricia Beardsley
ii
FAA Air Traffic Activity furnishes terminal and enroute air traffic activityinformation (e.g., takeoffs and landings, flight plans filed) of the NationalAirspace System. The data is collected/compiled from the FAA-operated AirportTraffic Control Towers, Air Route Traffic Control Centers, Flight ServiceStations, Approach Control Facilities, and FAA Contract-towered airports.
Reporting period: Fiscal YearLatest edition: 1989 dataOrder from: U.S. Government Printing Office or
National Technical Information Service
Date 1990 informationwill be available: February 1991
Date next publicationis scheduled: May 1991 (1990 data)
Person to contact: Nancy Trembley
FAA Directory is published twice a year. It contains six sections of data:Washington/Region/Center headquarters' managers; field facilities' managers/supervisors; regional area maps/organizational charts; alphabetical listing;special interest groups; and a glossary.
Latest edition: January 1991Order from: U.S. Government Printing Office
Date next publicationis scheduled: July 1991
Person to contact: Aifredia Brooks
FAA Statistical Handbook of Aviation is a convenient source for historical data.It presents statistical information pertaining to the Federal AviationAdministration, the National Airspace System, Airports, Airport Activity, U.S.Civil Air Carrier Fleet, U.S. Civil Air Carrier Operating Data, Airmen, GeneralAviation Aircraft, Aircraft Accidents, Aeronautical Production and Import/Export.
Reporting period: Calendar YearLatest edition: 1989 dataOrder from: U.S. Government Printing Office or
National Technical Information Service
Date 1989 informationwill be available: Various
Date next publicationis scheduled: December 1991 (1990 data)
Person to contact: Patricia Beardsley
iii
General Aviation Activity and Avionics Survey is an annual report that presentsthe results of the general aviation activity and avionics survey conducted toobtain information on the activity and avionics of the U.S. registered generalaviation aircraft fleet. The report contains estimated flying time, landings,fuel consumption, lifetime airframe hours, avionics, and engine hours of thegeneral aviation aircraft by manufacturer/model group, aircraft type, state andregion of based aircraft, and primary use.
Reporting period: Calendar YearLatest edition: 1989 dataOrder from: Government Printing Office or
National Technical Information Service
Date 1989 Informationwill be available: August 1991
Date next publicationis available: November 1991 (1990 data)
Person to contact: Shung-Chai Huang
U.S. Civil Airmen Statistics is an annual study of detailed airmen statistics.It contains calendar year statistics on pilots and nonpilots and the number ofcertificates issued.
Reporting period: Calendar YearLatest edition: 1989 dataOrder from: Management Standards and Statistics
Division or National TechnicalInformation Service
Date 1990 informationis available: February 1991
Date next publicationis scheduled: April 1991 (1990 data)
Person to contact: Patricia Carter
iv
PREFACE
This report presents the results of the 1989 Rotorcraft Activity Survey asprepared by the Statistical Analysis Branch, Management Standards and StatisticsDivision, Office of Management Systems (AMS-420).
The report is divided into seven, easy-to-read chapters. Each chapter containsits corresponding tables and figures. The figures are presented first, with thetables following the figures.
Chapter I, Introduction, briefly discusses the purpose, background and scope ofthe Rotorcraft Activity Survey Report and highlights the important findings ofthe survey.
Chapter II, Common General Aviation Activity Measures, presents information onseveral aviation activity measures used to indicate growth trends and activitylevels in the rotorcraft fleet. Some common aviation activity measures ofinterest are the number of active rotorcraft (flew one or more hours during theyear), the total hours flown, and average annual hours flown per rotorcraft.
Chapter III, Landings and Rotorcraft Base Facilities, presents the number ofrotorcraft landing at airports; heliports; helipads at airports; offshoreplatforms; and other landing facilities.
Chapter IV, Primary Use by Expanded Use Category, displays the array of servicesprovided by the rotorcraft fleet, such as air taxi, external load, personal,business, instructional, and emergency medical service.
Chapter V, Airframe Hours, provides data on the age of the rotorcraft fleet bypresenting the average airframe hours per active rotorcraft.
Chapter VI, Law Enforcement Rotorcraft, examines the estimated number of lawenforcement rotorcraft, total flight hours and average flight hours in fourdifferent ways, by: 1) aircraft type; 2) region of based rotorcraft; 3) ServiceDifficulty Reporting (SDR) Rotorcraft Manufacturer/Model Group; and 4) state ofbased rotorcraft. In addition, this chapter looks at the number of lawenforcement rotorcraft and total flight hours by expanded use category.
Chapter VII, Public Use Rotorcraft, examines the estimated number of public userotorcraft, total flight hours and average flight hours in four different ways,by: 1) aircraft type; 2) region of based rotorcraft; 3) SDR RotorcraftManufacturer/Model Group; and 4) state of based rotorcraft. In addition, thischapter looks at the number of public use rotorcraft and total flight hours byexpanded use category.
Appendix A details the methodology of the survey and includes a definition andexplanation of "standard error," a statistical measure reported in each table.Appendix B lists SDR aircraft group name and FAA Manufacturer/Model Codes.Appendix C contains the definitions of rotorcraft expanded use categories.
Suggestions and comments about this report are welcome and will be givencareful consideration in planning future editions.
v
TABLE OF CONTENTS
Paste
ORDER INFORMATION ......................................................... i
MANAGEMENT STANDARDS AND STATISTICS DIVISION PUBLICATION INFORMATION... ii
PREFACE... .......................................................... v
FAA REGIONAL BOUNDARIES .................................................. xi
I. INTRODUCTION ........................................................ 1-1
II. COMMON GENERAL AVIATION ACTIVITY MEASURES ......................... 2-1
2.1 1989 Rotorcraft Population Size, Active Rotorcraft, TotalFlight Hours and Average Flight Hours by Rotorcraft Type... 2-6
2.2 1989 Rotorcraft Population Size, Active Rotorcraft, TotalFlight Hours and Average Flight Hours by SDR RotorcraftManufacturer/Model Group ..................................... 2-7
2.3 1989 Rotorcraft Population Size, Active Rotorcraft, TotalFlight Hours and Average Flight Hours by Region of BasedRotorcraft .................................................... 2-10
2.4 1989 Rotorcraft Population Size, Active Rotorcraft, TotalFlight Hours and Average Flight Hours by State of BasedRotorcraft .................................................... 2-11
III. LANDINGS AND ROTORCRAFT BASE FACILITIES ........................... 3-1
3.1 1989 Total Rotorcraft Landings by Landing Facility Type byRotorcraft Type .............................................. 3-7
3.2 1989 Total Rotorcraft Landings by Landing Facility Type bySDR Rotorcraft Manufacturer/Model Group .................... 3-8
3.3 1989 Total Rotorcraft Landings by Landing Facility Type byRegion of Based Rotorcraft ................................... 3-14
3.4 1989 Total Rotorcraft Landings by Landing Facility Type byState of Based Rotorcraft .................................... 3-15
3.5 1989 Rotorcraft Average Number of Landings Per Flight Hourby Rotorcraft Type ........................................... 3-21
3.6 1989 Rotorcraft Average Number of Landings Per Flight Hourby SDR Rotorcraft Manufacturer/Model Group ................. 3-22
vii
Page
III. LANDINGS AND ROTORCRAFT BASE FACILITIES (Cont'd.)
3.7 1989 Rotorcraft Average Number of Landings Per Flight Hourby Region of Based Rotorcraft .............................. 3-25
3.8 1989 Rotorcraft Average Number of Landings Per Flight Hourby State of Based Rotorcraft ............................... 3-26
3.9 1989 Rotorcraft Total Landings by Expanded Use Category byRotorcraft Type ............................................ 3-29
3.10 1989 Total Active Rotorcraft by Base Facility Type byRotorcraft Type ............................................ 3-31
3.11 1989 Total Active Rotorcraft by Base Facility Type by SDRRotorcraft Manufacturer/Model Group ........................ 3-32
3.12 1989 Total Active Rotorcraft by Base Facility Type byRegion of Based Rotorcraft ................................. 3-38
3.13 1989 Total Active Rotorcraft by Base Facility Type by Stateof Based Rotorcraft ........................................ 3-40
IV. PRIMARY USE BY EXPANDED USE CATEGORY ............................. 4-1
4.1 1989 Total Active Rotorcraft by Expanded Use Category byRotorcraft Type ............................................ 4-4
4.2 1989 Rotorcraft Total Flight Hours by Expanded UseCategory by Rotorcraft Type ................................ 4-5
4.3 1989 Total Active Rotorcraft by Expanded Use Category bySDR Rotorcraft Manufacturer/Model Group .................... 4-6
4.4 1989 Rotorcraft Total Flight Hours by Expanded UseCategory by SDR Rotorcraft Manufacturer/Model Group ........ 4-12
4.5 1989 Total Active Rotorcraft by Expanded Use Category byRegion of Based Rotorcraft ................................. 4-18
4.6 1989 Rotorcraft Total Flight Hours by Expanded UseCategory by Region of Based Rotorcraft ..................... 4-20
4.7 1989 Total Active Rotorcraft by Expanded Use Category byState of Based Rotorcraft .................................. 4-21
4.8 1989 Rotorcraft Total Flight Hours by Expanded UseCategory by State of Based Rotorcraft ...................... 4-27
viii
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V. AIRFRAME HOURS ................................................... 5-1
5.1 1989 Rotorcraft Total Airframe Hours and Average AirframeHours by Rotorcraft Type ................................... 5-3
5.2 1989 Rotorcraft Total Airframe Hours and Average AirframeHours by SDR Rotorcraft Manufacturer/Model Group ........... 5-4
VI. LAW ENFORCEMENT ROTORCRAFT ....................................... 6-1
6.1 1989 Law Enforcement Rotorcraft, Total Flight Hours andAverage Flight Hours by Rotorcraft Type .................... 6-6
6.2 1989 Law Enforcement Rotorcraft, Total Flight Hours andAverage Flight Hours by SDR Rotorcraft Manufacturer/ModelGroup ...................................................... 6-7
6.3 1989 Law Enforcement Rotorcraft, Total Flight Hours andAverage Flight Hours by Region of Based Rotorcraft ......... 6-10
6.4 1989 Law Enforcement Rotorcraft, Total Flight Hours andAverage Flight Hours by State of Based Rotorcraft.......... 6-11
6.5 1989 Law Enforcement Rotorcraft, Number of Rotorcraft byExpanded Use Category by Rotorcraft Type ................... 6-14
6.6 1989 Law Enforcement Rotorcraft Flight Hours by ExpandedUse Category by Rotorcraft Type ............................ 6-15
VII. PUBLIC USE ROTORCRAFT ............................................ 7-1
7.1 1989 Public Use Rotorcraft, Total Flight Hours andAverage Flight Hours by Rotorcraft Type .................... 7-6
7.2 1989 Public Use Rotorcraft, Total Flight Hours andAverage Flight Hours by SDR Rotorcraft Manufacturer/Model Group ................................................ 7-7
7.3 1989 Public Use Rotorcraft, Total Flight Hours and AverageFlight Hours by Region of Based Rotorcraft ................. 7-10
7.4 1989 Public Use Rotorcraft, Total Flight Hours and AverageFlight Hours by State of Based Rotorcraft .................. 7-11
7.5 1989 Public Use Rotorcraft, Number of Rotorcraft byExpanded Use Category by Rotorcraft Type ................... 7-14
7.6 1989 Public Use Rotorcraft Flight Hours by Expanded UseCategory by Rotorcraft Type ................................ 7-15
ix
Page
APPENDIX A. Methodology for Rotorcraft Survey .......................... A-i
1. Overview................................................... A-i2. Coverage................................................... A-i3. Methodology ................................................ A-34. Response ................................................... A-3
A.1 Summary of Response Information ....................... A-45. Census Design .............................................. A-4
A.2 Census and Population Distribution by RotorcraftType .............................................. A-5
A.3 Confidence of Interval Estimates ...................... A-6A.4 Response Rate by Rotorcraft Type ...................... A-7.
APPENDIX B. SDR Rotorcraft Group Name - FAA Manufacturer/Model Codes... B-i
APPENDIX C. Definitions of Rotorcraft Expanded Use Categories ........... C-i
x
LISTING OF FIGURES
Fixture palle
2.1 1989 ACTIVE VS. REGISTERED ROTORCRAFT BY ROTORCRAFT TYPE... 2-3
2.2 1989 ROTORCRAFT TOTAL FLIGHT HOURS BY ROTORCRAFT TYPE ...... 2-4
2.3 1989 ROTORCRAFT AVERAGE HOURS FLOWN BY ROTORCRAFT TYPE ..... 2-5
3.1 1989 NUMBER OF ROTORCRAFT LANDINGS BY ROTORCRAFT TYPE ...... 3-3
3.2 1989 ROTORCRAFT LANDINGS BY LANDING FACILITY TYPE .......... 3-4
3.3 1989 NUMBER OF ROTORCRAFT LANDINGS BY EXPANDED USECATEGORY ...................................................... 3-5
3.4 1989 ACTIVE ROTORCRAFT BY BASE FACILITY TYPE ............... 3-6
4.1 1989 NUMBER OF ROTORCRAFT AND TOTAL FLIGHT HOURS BYEXPANDED USE CATEGORY ........................................ 4-3
5.1 1989 ROTORCRAFT AVERAGE AIRFRAME HOURS BY ROTORCRAFTTYPE .......................................................... 5-2
6.1 1989 LAW ENFORCEMENT ROTORCRAFT ............................. 6-3
6.2 1989 LAW ENFORCEMENT ROTORCRAFT TOTAL FLIGHT HOURS BYROTORCRAFT TYPE .............................................. 6-4
6.3 1989 NUMBER OF LAW ENFORCEMENT ROTORCRAFT AND TOTAL FLIGHTHOURS BY SELECTED PRIMARY USE CATEGORIES ................... 6-5
7.1 1989 PUBLIC USE ROTORCRAFT ................................... 7-3
7.2 1989 PUBLIC USE ROTORCRAFT TOTAL FLIGHT HOURS BYROTORCRAFT TYPE .............................................. 7-4
7.3 1989 NUMBER OF PUBLIC USE ROTORCRAFT AND TOTAL FLIGHTHOURS BY SELECTED PRIMARY USE CATEGORIES .................... 7-5
A.1 1989 ROTORCRAFT ACTIVITY SURVEY QUESTIONNAIRE .............. A-2
A.2 FIRST 1989 ROTORCRAFT ACTIVITY SURVEY COVER LETTERFOR OWNERS .................................................... A-8
A.3 SECOND 1989 ROTORCRAFT ACTIVITY SURVEY COVER LETTERFOR OWNERS .................................................... A-10
A.4 THIRD 1989 ROTORCRAFT ACTIVITY SURVEY COVER LETTERFOR OWNERS .................................................... A-12
A.5 FAA ADMINTSTRATOR ARTICLE .................................... A-14
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40
CHAPTER I
INTRODUCTION
The 1989 Rotorcraft Activity Survey is the first ever census of the more than10,000 registered rotorcraft in the United States. This report presents the 1989Rotorcraft Activity Survey results which provide the FAA with valuableinformation about the activities of the rotorcraft fleet. The informationobtained from this survey enables the FAA to monitor the rotorcraft fleet so thatFAA can, among other activities, anticipate and meet demand for National AirspaceSystem (NAS) facilities and services, assess the impact of regulatory changes onthe rotorcraft fleet, and implement measures to assure the safe operation ofrotorcraft in the airspace.
For the purposes of this rotorcraft survey, the term, "rotorcraft," refers toaircraft that use rotating wings (blades) to move through the air. In thisreport, rotorcraft are considered in two aircraft groups, manufacturer built andamateur built. The manufacturer built rotorcraft are further divided intopiston, and single engine and multiengine turbine rotorcraft. The rotorcraftsurveyed, therefore, range in complexity from simple, amateur built rotorcraft,to the *more sophisticated manufacturer built multiengine, turbine-poweredrotorcraft. These rotorcraft are used for a variety of purposes such as airtaxi, commuter, personal, corporate/business, instructional, and emergencymedical service--to name a few.
Also provided in this report is information on rotorcraft used for lawenforcement purposes and public use activities.
The rotorcraft survey questionnaire was mailed to every U.S. registeredrotorcraft owner in three mailings and to rotorcraft operators in the first twomailings. More than 64 percent of the rotorcraft owners/operators responded tothe census. Rotorcraft data, therefore, were collected for every state and FAAregion, as well as all of the major manufacturer/model groups of rotorcraft. Adetailed description of the survey methodology is provided in Appendix A.
This report is divided into seven chapters. Each chapter contains itscorresponding tables and figures, which follow each chapter's text. The figuresare presented first, with the tables following the figures. Altogether, thereare 15 figures and 39 tables of data on rotorcraft presented in this report.
Following are some of the significant rotorcraft survey findings for 1989:
GENERAL
o More than 2.8 million hours were flown by the 7,488 activerotorcraft in the U.S. fleet during 1989.
0 The average flight time per active rotorcraft was 390 hours, almosttwo and a half times the average flight time of the 1989 generalaviation fixed wing fleet (158 hours).
o Active rotorcraft comprised approximately 72 percent of theregistered rotorcraft fleet.
o During 1989, the rotorcraft fleet made almost 7.4 million landings.
1-1
o The total airframe hours for the active rotorcraftpopulation is 31.4 million hours.
o The active rotorcraft population has an average of approximately4,191 lifetime airframe hours.
GEOGRAPHIC
o The three regions with the greatest number of active rotorcraft are:the Western-Pacific with 1,458; the Southwestern with 1,413; and theSouthern with 1,223.
o The state with the largest estimated number of active rotorcraft isCalifornia with 1,072 active rotorcraft. The next top two statesare Louisiana with 645 and Florida with 635 active rotorcraft.
o The three regions with the greatest number of landings are:Southwestern with nearly 2 million landings; Western-Pacific with1.7 million; and Eastern with more than 951,000 landings.
ROTORCRAFT TYPE AND PRIMARY USE
o Air taxi is the most popular primary use of the active rotorcraftfleet. Almost 18 percent are primarily used in this way. Thesecond and third most popular primary uses are aerial observationand personal - 17 percent and 14 percent, respectively.
o Single engine turbine rotorcraft flew more than 54 percent of thetotal hours flown.
o Multiengine turbine rotorcraft averaged the most hours flown perrotorcraft, with 552 average hours. The single engine turbinerotorcraft followed closely with an average of 481 average hours.
o Although piston rotorcraft represent the greatest population, theydo not have the highest total airframe hours. Single engine turbinerotorcraft have both the highest total airframe hours and averageairframe hours, with 16.0 million total airframe hours and 4,934average airframe hours.
LAW ENFORCEMENT AND PUBLIC USE ROTORCAFT
o Law enforcement rotorcraft comprise 8.2 percent of the activerotorcraft fleet, and public use rotorcraft comprise 9.6 percent ofthe active rotorcraft fleet.
o Aerial observation is the most frequent primary use of lawenforcement rotorcraft, with 68 percent of the law enforcementrotorcraft used primarily for this purpose.
o Aerial observation is also the most frequent primary use of publicuse rotorcraft, with 50 percent of the public use rotorcraft usedprimarily for this purpose.
1-2
CHAPTER II
COMMON GENERAL AVIATION ACTIVITY MEASURES
Several aviation activity measures are used to indicate growth trends andactivity levels in the rotorcraft fleet. Some common aviation activity measuresof interest are the number of active rotorcraft (flew one or more hours duringthe year), the total hours flown, and average annual hours flown per rotorcraft.
This chapter presents four tables and three figures on these common aviationactivity measures. Tables 2.1-2.4 give estimates of the rotorcraft populationsize, number of active rotorcraft, total flight hours and average annual flighthours in four different ways, by: 1) Rotorcraft Type; 2) Service DifficultyReporting (SDR) Rotorcraft Manufacturer/Model Group; 3) Region of BasedRotorcraft; and 4) State of Based Rotorcraft.
To visualize the data presented in Tables 2.1-2.4, three figures are included inthis chapter. Figures 2.1, 2.2 and 2.3 show, by rotorcraft type, the number ofactive versus registered rotorcraft, total flight hours, and average annualflight hours, respectively.
Table 2.2 breaks down the number of estimated active aircraft and theirrespective average annual flight hour estimates by Service Difficulty Reporting(SDR) Rotorcraft Manufacturer/Model Group. The four "Other" categories listedin the beginning of Table 2.2 refer to all the rotorcraft which belong to amanufacturer's/model group that has less than 20 rotorcraft.
The different "Other" categories represent:
1 Manufactured Piston.2 Manufactured Single Engine Turbine Rotorcraft.3 Manufactured Multiengine Turbine Rotorcraft.4 Amateur Built Rotorcraft.
On a national level, the results of the 1989 Rotorcraft Activity Survey revealedthat:
o More than 2.8 million hours were flown by the 7,488 activerotorcraft in the U.S. fleet during 1989.
o The average annual flight time per active rotorcraft was 390 hours,almost two and a half times the average flight time of the 1989general aviation fixed wing fleet (158 hours).
o Active rotorcraft comprised approximately 72 percent of theregistered rotorcraft fleet.
2-1
The following observations can be derived from Tables 2.1 through 2.4:
0 There is a great deal of variation in the total number of hoursflown, number of active aircraft, and average hours flown among alltypes of rotorcraft.
0 In 1989, piston rotorcraft, the rotorcraft type with the largestnumber registered (3,994), had 67.2 percent of their fleet active.However, single engine turbine rotorcraft, the rotorcraft type withthe second largest number of rotorcraft registered (3,616), had 89.8percent of their fleet active.
0 Single engine turbine rotorcraft flew more than 54 percent of thetotal hours flown.
0 Multiengine turbine rotorcraft averaged the most hours flown perrotorcraft, with 552 average hours. The single engine turbinerotorcraft follow closely with an average of 481 hours.
0 The percentages of active rotorcraft in each region versus the totalnumber of registered rotorcraft in each region range from a low of62 percent in the Great Lakes region to a high of 86 percent in theAlaskan region.
0 The three regions with the greatest number of active rotorcraft are:the Western-Pacific with 1,458; the Southwestern with 1,413; and theSouthern with 1,223. These three regions also had the highestnumber of total hours flown. The Southwestern ranked first with779,136 hours, the Western-Pacific was second with 664,113 hours,and the Southern region had 342,154 hours.
o The Southwestern region had the highest average hours flown, 577.This most likely can be attributed to the use of helicopters inoffshore exploration for oil and natural gas in Louisiana and Texas,as well as law enforcement activities throughout the region.
o The state with the largest estimated number of active rotorcraft isCalifornia with 1,072 active rotorcraft. The next states with thelargest estimated number of active rotorcraft are Louisiana with 645and Florida with 635.
2-2
Figure 2.1
1989 ACTIVE VS. REGISTERED ROTORCRAFTBY ROTORCRAFT TYPE
MANUFACTURER BUILT
12.7Piston
13.2
Single Engine Turbine
1.0
n- Aultiengine Turbine
R y W-7 1.1
0.6
AMATEUR BUILT _________ 1.8
01 2 3 4 5
NUMBER OF ACTIVE ROTORCRAFT (THOUSANDS)
KEY
[--- = ActiveRegistered
SOURCE: Tabe 2.1
2-3
Figure 2.21989 ROTORCRAFT TOTAL FLIGHT HOURS
BY ROTORCRAFT TYPE
Amateur Built22 THOUSAND HOURS
1%
Multiengine TurbineET
41,532 THOUSAND HOURS
54%
SOURCE: Table 2.1
2-4
Figure 2.31989 ROTORCRAFT AVERAGE HOURS FLOWN
BY ROTORCRAFT TYPE
MANUFACTURER BUILT
Piston27
S Single Engine Turfbine 0 8
Auitengine Turbine52
AMA TEUR BUILT r1
0 100 200 300 400 500 600AVERAGE HOURS FLOWN
SOURCE: Table 2.1
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CHAPTER III
LANDINGS AND ROTORCRAFT BASE FACILITIES
Another aviation activity measure used to indicate growth trends and activitylevels in the rotorcraft fleet is number of landings. The first 4 tables in thischapter, Tables 3.1-3.4, contain data on the number of rotorcraft landing at thefive types of landing facilities: 1) airports; 2) heliports; 3) helipads atairports; 4) offshore platforms; and 5) other. The data in these tables arepresented by four distinct factors: 1) Rotorcraft Type; 2) Service DifficultyReporting (SDR) Rotorcraft Manufacturer/Model Group; 3) Region of BasedRotorcraft; and 4) State of Based Rotorcraft.
Tables 3.5-3.8 provide estimates of the average number of landings per flighthour at each of the five landing facility types by the four factors listed above.
Table 3.9 presents total rotorcraft landings by expanded use category byrotorcraft type. (Chapter 4, Primary Use by Expanded Use Category, discussesrotorcraft expanded use categories in greater detail).
The last group of tables in this chapter, Tables 3.10-3.13, present data on thenumber of active rotorcraft based at airports, heliports or some other basefacility type as of December 31, 1989, by: 1) rotorcraft type; 2) SDR RotorcraftManufacturing/Model Group; 3) Region of Based Rotorcraft; and 4) State of BasedRotorcraft.
Four figures are included in this chapter. Figure 3.1 shows the number ofrotorcraft landings by aircraft type; Figure 3.2 displays the number of landingsby type of landing facility; Figure 3.3 shows the number of rotorcraft landingsby expanded use category; and Figure 3.4 shows the number and percent of activerotorcraft by base facility type.
The following facts can be derived from Tables 3.1-3.9:
o During 1989, the rotorcraft fleet made almost 7.4 million landings.
o The majority of rotorcraft landings, 29 percent, were made at some"other" type of landing facility; 23.3 percent were made at helipadsat airports; 22.3 percent were made at heliports; 20.1 percent weremade at airports; and 4.9 percent were made at offshore platforms.
o California accounted for 18.9 percent of the 1989 rotorcraftlandings. Louisiana was second with 17.2 percent, and Texas wasthird with 6.3 percent of the rotorcraft landings.
o During 1989, 47.8 percent of all landings by piston enginerotorcraft were made at "other" types of landing facilities;31.3 percent of the landings by single engine turbine rotorcraftwere made at heliports; 43.5 percent of the landings made bymultiengine turbine rotorcraft were made at heliports; and48.1 percent of the landings by amateur built rotorcraft were madeat helipads at airports.
3-1
o The three regions with the greatest number of landings are:Southwestern with nearly 2 million landings; Western-Pacific with1.7 million; and Eastern with more than 951,000 landings.
0 Amateur built rotorcraft averaged the greatest number of landingsper flight hour, 4.6. Piston rotorcraft had 3.5, multiengineturbine rotorcraft had 2.4, and single engine turbine rotorcraft had2.2 landings per hour.
0 The average number of landings per flight hour was 3.4 in theEastern region; 2.9 in the Great Lakes region; and 2.7 in theNorthwest Mountain region.
o The 50-state average number of landings per flight hour was 2.6.The highest average number of landings per flight hour wasexperienced by Virginia, with 12 landings per flight hour.
o Of the 7.4 million landings in 1989, 1.8 million were conducted forair taxi purposes, 1.3 million for aerial application purposes, and1.1 million for instructional purposes.
o Most piston rotorcraft landings were in the aerial application usecategory (45 percent). The majority of single and multiengineturbine rotorcraft landings were in the air taxi category (with 37and 35 percent, respectively), and most amateur built rotorcraftlandings were in the personal use category (25 percent).
The following observations can be derived from Tables 3.10-3.13:
o Over 51 percent of all active rotorcraft are based at airports.Heliports account for another 34 percent. The remaining activerotorcraft are based at some "other" base facility type.
o In all the regions except the Southwestern, active rotorcraft areprimarily based at airports. The percentages of active rotorcraftbased primarily at airports ranged from a low of 46 percent in theCentral region to a high of 70 percent in the New England region.In the Southwestern region, however, the majority of activerotorcraft, 66 percent, are based at heliports.
3-2
Figure 3.11989 NUMBER OF ROTORCRAFT LANDINGS
BY ROTORCRAFT TYPE
MANUFACTURER BUILT
Pison2,4
Single Engine Turbine W.fl. .8
. .... . . . . '' . . . .. <,41
AMA TEURUWLT 101
0 So0 1,000 1,500 2,000 2,500 3.000 3,500NUMBER OF ROTORCRAFT LANDINGS (THOUSANDS)
SOURCE: Table 3.1
3-3
Figure 3.21989 ROTORCRAFT LANDINGSBY LANDING FACILITY TYPE
AIRPORT1,7
wL HELIPORT1,0
SHELIPAD AT AIRPORT 1,1
U-
az
0 250 500 750 1,000 1,250 1,500 1,750 2,000 2,250NUMBER OF ROTORCRAFT LANDINGS (THOUSANDS)
SOURCE: Tablo 3. 1
3-4
Figure 3.31989 NUMBER OF ROTORCRAFT LANDINGS
BY EXPANDED USE CATEGORY
EMERGENCY MEDICAL SERVICE29- UNDER FAR 135
EMERGENCY MEDICAL SERVICE L6- NOT UNDER FAR 135
COMMUTER CARRIER 40
CORPORATE1,2
AERIAL APPLICATION ....... .M1,337
AERIAL OBSERVATION ,5
EXTERNAL LOAD 229
O T H E R W O R K U S E 6 09
0 200 400 600 800 1,000 1,200 1,400 1,600 1,800
NUMBER OF ROTORCRAFT LANDINGS (THOUSANDS)
SOURCE: Tablo 3.9
3-5
Figure 3.4
1989 ACTIVE ROTORCRAFTBY BASE FACILITY TYPE
~Airports
3,W5951%
SOURCE: Table 3.10
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3 - 45
CHAPTER IV
PRIMARY USE BY EXPANDED USE CATEGORY
The rotorcraft fleet is used to provide an array of services, such as air taxi,external load, personal, business, instructional, and emergency medical service.This chapter considers the major uses of the rotorcraft fleet. Twelve expandeduse categories for rotorcraft are defined in Appendix C.
This chapter consists of eight tables and one figure. The odd numberedTables, 4.1-4.7, present the estimated number of active and inactive rotorcraft,by expanded use category, in four different ways, by: 1) aircraft type; 2) SDRRotorcraft Manufacturer/Model Group; 3) region of based rotorcraft; and 4) stateof based rotorcraft. The even numbered Tables, 4.2-4.8, present the estimatedtotal hours, by expanded use category, in the same four ways listed above.
Figure 4.1 displays two graphs. The first one shows the number of rotorcraft ineach primary use category. The second graph depicts the total flight hours byrotorcraft in each expanded use category.
Some key observations to be drawn from Tables 4.1-4.8 and the figure in thischapter are:
0 Approximately 72 percent of the registered rotorcraft fleet wereactive in 1989.
0 Air taxi is the most popular primary use of the active rotorcraftfleet. Almost 18 percent are primarily used in this way. Thesecond and third most popular primary uses are aerial observationand personal - 17 percent and 14 percent, respectively.
0 About 28 percent of the active single engine turbine rotorcraft andalmost 38 percent of the active multiengine turbine rotorcraft areused primarily for air taxi purposes. Together, 32 percent of theturbine rotorcraft are used for air taxi.
o As one might expect, personal use is the most popular primary use ofamateur built rotorcraft. More than 68 percent of the amateurrotorcraft were used primirily for this purpose.
C Aerial observation is the most popular primary use in five out ofnine regions: the Southern region, 39 percent; the Central region,34 percent; the Great Lakes region, 33 percent; the Western-Pacificregion, 33 percent; and the Eastern region, 24 percent.
0 The rotorcraft fleet flew over 896 thousand air taxi hours in 1989.The next closest use category, aerial observation, totaled more than626 thousand hours.
0 Instructional use is the largest use of piston rotorcraft. Almost31 percent (224,075 hours) of the total hours flown by pistonrotorcraft were used primarily for this purpose.
4-1
o The largest use of both the single and multiengine turbinerotorcraft was air taxi, with 40 percent and 49 percent of the totalhours flown, respectively, comprising this use category.
o In both the Alaskan and Southwestern regions, the largest use is airtaxi, accounting for 79 percent and 72 percent, respectively, of thetotal hours flown in those regions. Even though the Southwestregion has only 9 percent of the active fleet, rotorcraft in thisregion accounted for over 60 percent of the air taxi hours flown.
o The largest use of rotorcraft in the Northwest Mountain region isexternal load, with 26 percent of its total hours flown in thiscategory. In the New England region, the largest use of rotorcraftis split between corporate and instructional use categories, with28 percent of the region's total hours flown in each category.
4-2
Figure 4.11989 NUMBER OF ROTORCRAFT
AND TOTAL FLIGHT HOURSBY EXPANDED USE CATEGORY
PERSONAL ~ .: ...... 1,072
EMERGENCY MEDICAL SERVICE28
EMERGENCY MEDICAL SERVICE21- NOT UNDER FARI135
AIR TAXIM** 1,342
COMMUTER CARRIER 21r
CORPORATE 727
INSTRUCTIONAL 695
AERIAL APPLICATION 833
AERIAL OBSERVATION 1,29
EXTERNAL LOAD ~. z1~ 263
OTHER WORK USE 10
BUSINESS *~:416
OTHER 216
0 200 400 600 800 1,000 1,200 1,400
NUMBER OF AC71VE ROTORCRAFT
PERSONAL ~ 0
EMERGENCY MEDICAL SERVICE 101.7- UNDER FAR 135
EMERGENC Y MEDICAL SERVICE 1035- NOT UNDER FAR 135
AIR TAXI ** . 896.1
COMMUTER CARRIER 144
CORPORATE 2683
INSTRUCTIONAL 2 720
AERIAL APPLICATION 236.8
AERIAL OBSERVATION 626.0~
EXTERNAL LOAD :* 133.8
OTHER WORK USE 34.2
BUSINESS 53.4
OTHER . 1.6
0 100 200 300 400 500 600 700 800 900
TOTAL HOURS (THOUSANDS)SOURCE: Tabls 4.1 and 4.2
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CHAPTER V
AIRFRAME HOURS
The subject of aircraft aging is becoming increasingly important because ofrecent questions raised about the safety of commercial air carriers relative tothe age of their aircraft. Similar questions might be asked of the rotorcraftfleet. Data in this chapter can serve as input to studies correlating age andsafety.
This chapter presents two tables and one figure: Table 5.1 presents data on thetotal and average airframe hours per active rotorcraft by rotorcraft type.Table 5.2 presents the total and average airframe hours per active rotorcraft bySDR Rotorcraft Manufacturer/Model Group. Figure 5.1 graphically displays theaverage airframe hours per rotorcraft type.
Major findings of this chapter include:
0 The total airframe hours for.the active rotorcraft population is31.4 million hours.
0 The active rotorcraft population has an average of approximately4,191 lifetime airframe hours per rotorcraft.
o Although the piston rotorcraft have the greatest population, they donot have the highest total airframe hours. Single engine turbinerotorcraft have both the highest total airframe hours (16.0 million)and average airframe hours (4,934).
o As one might expect, the amateur built rotorcraft have both thelowest total airframe hours and the lowest average airframe hours,with only 84,341 total airframe hours and 147.5 average airframehours.
5-1
Figure 5.11989 ROTORCRAFT AVERAGE AIRFRAME HOURS
BY ROTORCRAFT TYPE
MANUFACTURER BUILTI
Piston 41
S Single Engine Tufbine4,3
4 Atiliengine Turbine 4103
AMA TELJRUILT 148
0 1,000 2,000 3,000 4,000 5,000AVERAGE AIRFRAME HOURS
SOURCE: Tabl S.1I
5-2
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E-1
CHAPTER VI
LAW ENFORCEMENT ROTORCRAFT
Some of the rotorcraft in the rotorcraft fleet are used for law enforcementactivities. These activities include surveillance, instructional use, andemergency medical service- -to name a few. For the purpose of this chapter, a lawenforcement rotorcraft is one that was used for law enforcement 90 percent of thetime or more during the year. This chapter presents the number of rotorcraftused in law enforcement activities, the total flight hours, and the primary useof law enforcement rotorcraft.
This chapter presents six tables and three figures. Tables 6.1-6.4 present theestimated number of law enforcement rotorcraft, total flight hours and averageflight hours in four different ways, by: 1) aircraft type; 2) region of basedrotorcraft; 3) SDR Rotorcraft Manufacturer/Model Group; and 4) state of basedrotorcraft. Tables 6.5 and 6.6 present the number of law enforcement rotorcraftand total flight hours by expanded use category. Definitions of expanded usecategories are listed in Appendix C.
Figure 6.1 shows the number of law enforcement rotorcraft as a percent of allactive rotorcraft. Figure 6.2 displays law enforcement rotorcraft total flighthours by rotorcraft type. Figure 6.3 displays two graphs--the first one showsthe number of law enforcement rotorcraft in selected expanded use categories; thesecond graph depicts the total hours flown by law enforcement rotorcraft inselected expanded use categories.
Some key observations to be drawn from Tables 6.1-6.6 and the figures in thischapter include:
0 Approximately 615 out of 7,488 active rotorcraft are used for lawenforcement purposes.
0 Law enforcement rotorcraft comprise 8.2 percent of the activerotorcraft fleet.
0 Law enforcement rotorcraft flew more than 331,000 hours,11.7 percent of the total hours flown by rotorcraft in 1989.
0 Law enforcement rotorcraft averaged 546 hours, with a low of 314average hours for multiengine turbine rotorcraft and a high of 609average hours for single engine turbine rotorcraft.
0 More single engine turbine rotorcraft than any other type ofrotorcraft are used for law enforcement activities, comprising60 percent of the active law enforcement rotorcraft.
0 Aerial observation is the most frequent primary use of lawenforcement rotorcraft, with 68 percent of the law enforcementrotorcraft primarily used for this purpose. The aerial observationuse category accounted for more than 252,000 total flight hours or76 percent of the total flight hours by law enforcement rotorcraft.
6-1
o The second and third highest use categories are emergency medicalservice not under FAR 135, with 24,105 flight hours, and aerialapplication, with 13,904 flight hours.
0 The three regions with the greatest number of law enforcementrotorcraft are: Western-Pacific with 194; Southern with 141; andEastern with 110 rotorcraft.
o The three states with the greatest number of rotorcraft in lawenforcement are: California with 149; Florida with 76; and Texaswith 41.
o The state of California alone accounted for 34 percent of the totallaw enforcement flight hours in 1989.
6-2
Figure 6.11989 LAW ENFORCEMENT ROTORCRAFT
Othe Anftivmen Rotorcraff
Total Active Rotorcraft: 7,488 =100%
SOURCE: Table 6.1
6-3
Figure 6.21989 LAW ENFORCEMENT ROTORCRAFT
TOTAL FLIGHT HOURSBY ROTORCRAFT TYPE
Multlengine Turbine
10,000 HOURS
SnlEnieTrine
222,000 HOURS__
Amateur Built Rotorcraft did not have any law enforcement flight hours.
SOURCE: Table 6.1
6-4
Figure 6.3
1989 NUMBER OF LAW ENFORCEMENTROTORCRAFT AND TOTAL FLIGHT HOURSBY SELECTED PRIMARY USE CATEGORIES
EXTERNAL LOAD 7
CORPORATE 20
AERIAL APPLICATION 24
OTHER '. 26
EMERGENCY MEDICAL SERVICE 54- NOT UNDER FAR 135
INSTRUCTIONAL 54
AERIAL OBSERVATION ....:.: 421 .::::: * I,"I'. -.
I '!
0 25 50 75 100 125 400 425
NUMBER OF LAW ENFORCEMENT ROTORCRAFT
EXTERNAL LOAD 4,730
CORPORATE 5,627
AERIAL APPLCAT1ON 13,904
OTHER 12,633
EMERGENCY MEDICAL SERVICE .: ::.-,. 24,105- NOT UNDER FAR 135 : -- :.:.:.:-- -- |
INSTRUCTIONAL 10,616
AERIAL OBSERVATION 252,4.
0 10,000 20,000 30,000 40,000 50,000 250,000 260,000
TOTAL LAW ENFORCEMENT ROTORCRAFT FUGHT HOURS
SOURCE: Tobles 6.5 and 6.6
6-5
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CHAPTER VII
PUBLIC USE ROTORCRAFT
Some of the rotorcraft in the rotorcraft fleet are used by local, state andFederal government agencies on behalf of their citizens for public useactivities. These activities include survey work, aerial observation, and aerialapplication--to name a few. For the purpose of this chapter, a public userotorcraft is one that was used for public use 90 percent of the time or moreduring the year. This chapter presents the number of rotorcraft used in publicuse activities, the total flight hours, and the primary use of public userotorcraft.
This chapter presents six tables and three figures. Tables 7.1-7.4 present theestimated number of public use rotorcraft, total flight hours and average flighthours in four different ways, by: 1) aircraft type; 2) region of basedrotorcraft; 3) SDR Rotorcraft Manufacturer/Model Group; and 4) state of basedrotorcraft. Tables 7.5 and 7.6 present the number of public use rotorcraft andtotal flight hours by expanded use category. Definitions of expanded usecategories are listed in Appendix C.
Figure 7.1 shows the number of public use rotorcraft as a percent of all activerotorcraft. Figure 7.2 displays public use rotorcraft total flight hours byrotorcraft type. Figure 7.3 displays two graphs--the first one shows the numberof public use rotorcraft in selected expanded use categories; the second graphdepicts the total hours flown by public use rotorcraft in selected expanded usecategories.
Some key observations to be drawn from Tables 7.1-7.6 and the figures in thischapter include:
o Approximately 716 out of 7,488 active rotorcraft are used for publicuse purposes.
o Public use rotorcraft comprise 9.6 percent of the active rotorcraftfleet.
o Public use rotorcraft flew more than 293,000 hours, 10.4 percent ofthe total hours flown by rotorcraft in 1989.
o Overall, public use rotorcraft averaged 417 flight hours with singleengine turbine rotorcraft experiencing 466 average flight hours.
o As with law enforcement rotorcraft, single engine turbine rotorcraftare also the most frequently used public use rotorcraft type,comprising 60 percent of the public use rotorcraft.
o Aerial observation is the most frequent primary use of public userotorcraft, with 50 percent of the public use rotorcraft primarilyused for this purpose. The aerial observation use category alsoaccounted for the most total flight hours, almost 188,000 hours or64 percent of the total hours flown by public use rotorcraft.
7-1
o The second and third highest use categories are aerial applicationwith 21,990 flight hours and emergency medical service not underFAR 135, with 20,507 flight hours.
o The three regions with the greatest number of public use rotorcraftare: Western-Pacific with 220; Southern with 158; and Eastern with96 rotorcraft.
o The three states with the greatest number of public use rotorcraftare: California with 155; Florida with 86; and Texas with 40.
o The state of California alone accounted for 30 percent of the totalpublic use flight hours in 1989.
7-2
Figure 7.11989 PUBLIC USE ROTORCRAFT
Otherbli AUtiv Rotocra
Total Active Rotorcraft: 7,488 =100%
SOURCE: Tabl 7.1
7-3
Figure 7.21989 PUBLIC USE ROTORCRAFT
TOTAL FLIGHT HOURSBY ROTORCRAFT TYPE
SOURCE:12HOUR7.
muniegine urbin
Figure 7.31989 NUMBER OF PUBLIC USE
ROTORCRAFT AND TOTAL FLIGHT HOURSBY SELECTED PRIMARY USE CATEGORIES
BUSINESS 8
EXTERNAL LOAD 17
AIR TAXI L 2
OTHER z* 49
EMERGENCY MEDICAL SERVICE ~ ' .. ~ 54- NOT UNDER FAR 135
INSTRUCTIONAL '.' ~~55
CORPORATE 59
AERIAL APPLICA 1lON~ ~8
AERIAL OBSERVA77ON ~ .-.--.. ,.. .. .356
0 25 50 75 100 125 350 375
NUMBER OF PUBLIC USE ROTORCRAFT
BUSINESS 1,521
EXTERNAL LOAD '~~6,180
AIR TA XI .. 8,825.... ....
OTHER 13,739
EMERGENCY MEDICAL SERVICE 20,507- NOT UNDER FAR 135
INSTRUCTIONAL ~ 96
CORPORATE *18,186
AERIAL APPLICATION 21,990
AERIAL OBSERVATION ... ~..'~ : .s:~ '~ 187,1917
0 10000 20000 30,000 40,000 50,000 180,000 190,000
TOTAL PUBLIC USE ROTORCRAFT FLIGHT HOURS
SOURCE: Tabls 7.5 and 76
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APPENDIX A
METHODOLOGY FOR THE 1989 ROTORCRAFT ACTIVITY SURVEY
1. OVERVIEW
1.1 Purpose and Background
The purpose of the Rotorcraft Activity Survey is to provide the Federal AviationAdministration (FAA) with information on the activity of the rotorcraft fleet.The information obtained from the survey enables the FAA to monitor therotorcraft fleet so that the FAA can, among other activities, anticipate and meetdemand for National Airspace System (NAS) facilities and services, assess theimpact of regulatory changes on the rotorcraft fleet, and implement measures toassure the safe operation in the airspace of all aircraft.
The 1989 Rotorcraft Activity Survey is the first ever attempted census of thegeneral aviation rotorcraft population conducted by the FAA. The census wasinitiated in order to address industry concerns of bias in rotorcraft statisticswhich were thought to stem from sample design and response problems. FAA alsoneeded additional information about rotorcraft not currently collected. FAAForm 1800-55 was the questionnaire used for data collection (see Figure A.1).
2. COVERAGE
2.1 Rotorcraft
The Rotorcraft Activity Survey covers all rotorcraft registered in the UnitedStates as of December 31, 1989. The term, "rotorcraft," used in this surveyrefers to aircraft that use rotating wings (blades) to move through the air. Inthis report, rotorcraft are considered in two aircraft groups, manufacturer builtand amateur built. The manufacturer built rotorcraft are further divided intopiston, and single engine and multiengine turbine rotorcraft.
Certain rotorcraft have been excluded from the survey. This group consists ofrotorcraft registered to dealers, rotorcraft in the process of being sold or withregistration pending, and rotorcraft for which not enough information wasavailable to categorize them properly for sampling purposes.
Rotorcraft are used for a variety of purposes such as air taxi,corporate/business, personal, recreational, instructional, and emergency medicalservice to name a few. Rotorcraft range in complexity from simple, amateur builtrotorcraft to the more sophisticated manufacturer built multiengine turbinerotorcraft.
2.2 Geographic
The rotorcraft survey conducted by the FAA covers rotorcraft registered with theUnited States Aircraft Registry as of December 31, 1989. Over 99 percent ofthese aircraft are registered to owners livinp in the 50 states; Washington,D.C.; Puerto Rico; and other U.S. territories.
'Source: FAA Aircraft Registration Master File as of December 31, 1989.
A-i
Figure A.1 SURVEY QUESTI0.4MAIRE Form Approved OMB NO. 2120-0541
0 ZA 1989 ROTORCRAFT ACTIVITY SURVEY
This report is authorized by Section 311 of the Federal Aviation Act at 1958. This information collection conforms to the legal and administrativestandards established by the Federal Government to assure confidenil treatment of statistical information. The information you provide will beused only for statistical purposes and will not be published or released to any person, organization, or government entility in any torm that wouldreveal specific information reported by an individually idenlifiable respondent. INSTRUCTIONS:_Pleaseanswerquestions
INSTRUCTIONS: Please answer questionsfor the aircraft below.AIRCRAFT CHARACTERISTICS
Mall the completed questionnalre In tencloesed. potago-poid eielope fir
Federal Aviation AdministrationAttention: Executive Resource Associates
L CallerNo.91013Arlington, Virginia 22202
1. Is this rotorcral primarily operated by the: 12. How many total hours in all use categories did this rotorcralt flyo Registered owner 0 Long-term lessee or operator during 1989? - Hours
2. Person completing this form: 13. What percentage of time was this rotorcratt flown in the0 Owner. or owner's representative following use categories during 19197 (Aircraft used as
public and/or law enforcement aircraft should alsof Long-term lessee or operator, or representative complete this question. For example. a law entorcement
aircraft could be used for EMS and serial observationJ3. Did this rotorcratt have a velid airworthiness certificate on moass maeesure Ihaf yeurreepenea fIlie N -taddDecember 31.1909? pe tolo-0Yes No a. PeraeWfaocreaslola - individual flying for
4. Was this aircraft certificated for IFR flight on December 31. 19697 personal, non-business reasons.0 Yes - No b. EmrgencyMedca Servc -transporting people
for medical care. or transporting donor organs forI not certificated for IFR flight, was it IFR equipped? transplant.f Yes 0- No Under FAR Part 135. Air Taxi and Commercial
5. In what stale. U.S. territor. or foreign country was this rotorcraft Operators.based on December 31. 111; Not under FAR Part 135.
c. Air Tai Charter - FAR Part 135: Air Taxi andCommercial Operators passenger and cargo
State. U.S. Territory Foreign Country operations, for hire. excluding commuters and2 digit abr. EMS.
6. At what kind of facility was it based on December 31. 19697 d. Commuter Air Carrier - scheduled (at least fivescheduled round trips per week) FAR Part 135. Airo Airport 0 Heliport 0 Other Taxi and Commercial Operators, passenger and
7. What were the total litetime airtrsme hours as of December 31. 1997 cargo operations. %
Hours a. Comlpny/Execulve Trensportatlen - transporta-tion of company personnel. guest. or cargo. with a
S. Is this rotorcraft a military surplus aircraft? professions# crew (not under FAR Part 135. Air Taxi0 Yes. f yes. what was the original military make and model? and Commercial Operators). Examples include:
transporting parts or crews to off-shore oil rigs.transporting fire fighters a fres. and bank paper
o No. transfer.f. Instrucllotna - flying under the supervision, or9. Did this rotorcralt tty at any time during calendar year 1909? specific direction, of a flight instructor.
o Yes. Ifyes. pleaselnsarithematlnligquestlnsonthis form. g. Aeral Applcation - use of the aircraft for theo No. Ilno.donotoe I--p-ItheNllsofOftlelrn.butretumitinthe distribution of things: includes operations under
enclosed business reply enelvokpe to the address shown above. FAR Part 137. Agricultural Aircraft Operations.and also activities like crop dusting, insect control.
10. Was this rolorcraft operated by or to the Federal. slate or local fish stocking, lire fighting, and fertilization.government, or a public utility as a public use aircraft at any time h. Aerial Obsevatlen - use of the aircraft as anduring calendar yes( 19111 .Ara bsrain-ueo tearrf sa
observation platform. Examples include: mapping.0 yes 0 No photography. survey, patrol, search and rescue.It yes. list the prcentage of the total fight hous It wal used as a highway traffic advisory, sightseeing, ranching.surveillance. oil and mineral exploration, criminalpublic aircraft: - % pursuit. and fish spotting.
11. Was this roftorcrafl operated by or for a law anforcement agency at i. Eslxenal Load - operations under FAR Part 133.any time during calendar year 196? . Rotorcralft External Load Operations. Examples[ Yes " No include helicopter hoist. and hauling logs.If yes. list the percentage of the total flight hours i1 was operated by j. Other Work Use - construction work. serialor for a law enforcement agency: % advertising. polenating, movie making, etc.
Comments: k. Businees TramSportation - individual use 0f anaircraft tar business reasons.
1. Other - R&D. experimentation, testing, air shows.demonstrations. etc.
TOTAL 100%14. What percentage of the total hours were liown IFR?15. How many landings did this rotorcraft make during 1969?
Landings.16. What percentage of landings were at the following facilities?Airports % Ottshore Platforms - %Heliports _ % Other - %
Hefipads at Airports - %17. Does this report cover all of 1969?
o yes.O No. If no. which months does it cover?, . to
(Month) (Month)16. Comments - Your comments are invited to assist us in improving
this survey. Please use the comments area to the left or the reverseWe apprclet cofr ipefng this oM. side of this form.
Ageny Display of Esllmoted Sllen of the ON RFlorraflt Activity SurveyThe public reporting burden for the Collction of this information is estimated to average 20 minutes per response. If you wish to comment on theaccuracy of the estimate C -make stggistions for reducing this burden, Please direct your coromenRl to F 4A and OMB t the fo:towing addresse:
U.S. DOT Federal Aviation Administration & OMB Managemen" and BudgetStatistical Analysis Branch, AMS-420 Paperwork Reduct on Project 2120-0541Washington. D.C. 2091 Washington. D.C. 20503
FAA Faro 1ilW1 o.imA-2
2.3 Content
The questionnaire, FAA Form 1800-55 shown previously in Figure A.1, requests therotorcraft owner/operator to provide the following information on the aircraft'scharacteristics and uses for various periods:
1) hours by use and the number of landings for the entire calendar year,1989; and
2) total airframe hours and the aircraft's base location as ofDecember 31, 1989.
3. METHODOLOGY
The rotorcraft data were collected by mailing the questionnaire three differenttimes (March, May and July 1990) to the owners of all rotorcraft registered inthe U.S. as of December 31, 1989. In addition, the questionnaire was sent twice(March and May, 1990) to rotorcraft operators identified by the HelicopterFoundation International (HFI). The HFI provided a listing of 706 rotorcraftoperators. Even though all of the rotorcraft operated by the 706 operators werealso on the FAA Master File, only 127 matches could be made by name and addresssince the HFI listing did not identify the N-number of the rotorcraft. Thus, 579operators received two separate questionnaires: one as HFI-identified operatorsoperating an unknown number of rotorcraft and a second questionnaire as the FAA-identified owner of a specific rotorcraft. If multiple questionnaires for thesame rotorcraft were returned, the earliest one received was used.
4. RESPONSE
The first mailing in March 1990 covered all 10,469 aircraft in the census(including 579 operators) and had an overall response rate of 55.3 percent asshown in Table A.l. The response rate was 25.6 percent for operators and 57percent for owners. The responses for the first mailing accounted forapproximately 86.0 percent of the total responses to the survey. The secondmailing conducted in May included only those aircraft in the census that had notyet responded including those respondents whose flrst mailing had been returnedby the U.S. Postal Service (i.e., postal returns). The second mailing had aresponse rate of 13.2 percent which accounted for approximately 9.2 percent ofthe total responses to the survey. In the second mailing, 68 percent of theoperators responded and 7.7 percent of the owners. The third mailing conductedin July 1990 was sent only to the owners of the rotorcraft who had not respondedto the first or second mailings and postal returns were eliminated. The thirdmailing produced a response rate of 14.6 percent, or 4.7 percent of the totalresponses to the survey. The valid survey responses resulted in an overallresponse rate of 64.2 percent. Overall, 76.2 percent of the operators and63.5 percent of the owners responded. Adjusting for postal returns, the responserate for delivered questionnaires was 78.3 percent. Similar adjustments showoperator and owner responses for delivered questionnaires to be 92.9 percent and77.5 percent, respectively.
Each of the three mailings was accompanied by a cover letter, shown respectivelyin Figures A.2, A.3, and A.4 at the back of this Appendix. The third mailingalso had a special insert of an article by the FAA Administrator published in theSummer 1990 edition of Rotor magazine (Figure A.5).
A-3
TABLE A.l SUMMARY OF RESPONSE INFORMATION
PHASE VALID SAMPLE SIZE # RESPONSES RESPONSE RATE % TOTAL RESPONSE
Ist MailingOperators 579 148 25.6 33.6Owners 9890 5,638 57.0 89.7
Total Ist Mailing: 10,469 5,786 55.3 (67.4)* 86.1
2nd Mailing2
Operators 431 293 68.0 66.4Owners 4.252 326 7.7 5.2
Total 2nd Mailing: 4,683 619 13.2 (22.1)* 9.2
3rd Mailing3
Operators 0 0 0.0 0.0Owners 2.181 319 14.6 5.1
Total 3rd Mailing: 2,181 319 14.6 (14.6)* 4.7
Census TotalOperators 579 441 76.2 100.0Owners 9.890 6,283 63.5 100.0
CENSUS TOTAL: 10,469 6,724 64.2 (78.3)* 100.0
*Adjusted for postal returns.
5. CENSUS DESIGN
5.1 Census Frame and Size
The FAA Mike Monroney Aeronautical Center in Oklahoma City maintains the AircraftRegistration Master File, which is the official record of registered civilaircraft in the United States. Questionnaires were sent to owners of allrotorcraft in the master file (according to the definition in Section 2.1), withthe following exceptions:
1) rotorcraft registered to dealers;
2) rotorcraft with "Sale ReporXed" or "Registration Pending" appearing inthe record instead of the owner's name;
3) rotorcraft with a known, inaccurate owner's address; and
4) rotorcraft with missing state of registration, aircraftmake-model-series code, or aircraft type information.
For calendar year 1989, 10,469 general aviation rotorcraft were surveyed.Table A.2 shows the distribution of the census by rotorcraft type.
21ncludes postal returns.
3Excludes 1,883 postal returns.
A-4
TABLE A.2 CENSUS AND POPULATION DISTRIBUTIONBY ROTORCRAFT TYPE
APPROXIMATE SAMPLE SAMPLE AS %ROTORCRAFT TYPE POPULATION SIZE OF POPULATION
Manufacturer BuiltPiston 3,994 3,994 100.0Single Engine Turbine 3,616 3,616 100.0Multiengine Turbine 1,069 1,069 100.0
Amateur Built 1.790 1,790 100.0
TOTAL: 10,469 10,469 100.0
5.2 Description of Census Design
The 1989 Rotorcraft Activity Survey was initially designed to be a completecensus of the rotorcraft fleet with the four exceptions listed on page A-4.However, as indicated in Table A.1, out of the 10,469 rotorcraft listed on theFAA Master file (including 579 rotorcraft owners identified as operators by theHFI), a total of 6,724 completed questionnaires were received which represents64.2 percent of the targeted rotorcraft population. Therefore, the data receivedwere extrapolated to the rotorcraft population size in order to represent all10,469 rotorcraft in the general aviation rotorcraft fleet.
Each rotorcraft in the census was given a weight which corresponded to the numberof rotorcraft in the census frame represented by that rotorcraft. When allresponses to the census were tallied, each weight was adjusted according to theresponse rate for the cell, counting a rotorcraft for which no survey questionswere answered as a non-respondent, and a rotorcraft for which at least onequestion was answered as a respondent. The weight adjustment is described below:
1) non-respondents' weights were changed to zero; and
2) the weights of all responding aircraft were adjusted uniformly bydividing the initial weight by the response rate for the cell.
This meth-d of weight adjustment has several attributes. It actuallyincorporates the response rates into the final weights and simplifies estimationprocedures.
5.3 Error
Errors associated with estimates derived from the census survey results fall intotwo categories: sampling and non-sampling errors. Sampling errors occurbecause the final estimates are based on a sample of only those rotorcraft thatresponded--not the entire population.
Non-sampling errors arise from a number of sources such as non-response,inability or unwillingness of respondents to provide correct information,differences in interpretation of questions, mistakes in recording or coding thedata obtained, and others. The following sections discuss the two types oferrors.
A-5
5.3.1 Sampling Error
In a designed survey, the sampling error associated with an estimate is generallyunknown, but a measurable quantity, known as the standard error, is often used
as a guide to the magnitude of sampling error. The standard error measures thevariation which would occur among the estimates from all possible samples of the
same design from the same population. It measures the precision with which anestimate approximates the average result of all possible samples or the resultof a survey in which all elements of the population were sampled.
Since a census is a 100 percent sample, it is theoretically possible to eliminate
sampling error altogether. However, there typically will be nonresponse. If theassumption is made that nonresponse is random, then the results are the same ashaving a survey with the original sample size, reduced by the number of
nonresponses, with a 100 percent response for the survey. Since we have nostrong basis to assume response biases, this is a reasonable assumption andpermits the use of the standard survey estimation equations.
The user of survey results must consider sampling error along with the pointestimate itself when making inferences or drawing conclusions about the samplepopulation. A large standard error relative to an estimate indicates lack of
precision and, inversely, a small standard error indicates precision. To
facilitate the comparison of estimates and their errors, the tables in thispublication display standard errors for all estimated quantities. In most cases,the tables contain the percent standard error, which is the standard errormultiplied by 100 and divided by the corresponding estimate. The paragraphsbelow explain the proper interpretation and use of the errors.
An estimate and its standard error make it possible to construct an interval
estimate with the prescribed confidence that the interval will include theaverage value of the estimate from all possible samples of the population. TableA.3 below shows selected interval widths and their corresponding confidence.
TABLE A.3 CONFIDENCE OF INTERVAL ESTIMATES
APPROXIMATE CONFIDENCETHAT INTERVAL INCLUDES
WIDTH OF INTERVAL AVERAGE VALUE
I Standard error 68%
2 Standard errors 95%
3 Standard errors 99%
For the most part, the measure of precision presented in this report is thepercent standard error (% s.e.). As explained above, this statistic is merelythe ratio of the standard error to the estimate times 100 (to convert the
fraction to a percent). In addition to immediately communicating the relative
A-6
precision of the estimate, it allows ready compariwon of the survey's performanceacross variables. The following is an example of how to use the % s.e.: fromTable 2.1, a 95 percent confidence interval for the number of active manufacturerbuilt piston response would be 2,684 plus or minus 2 (1.2/100)(2,684) or theinterval between 2,620 and 2,748. One would say that the number of activemanufacturer built piston responses lies somewhere between 2,620 and 2,748 with95 percent confidence. Another way of expressing this is that we are highlyconfident (95 percent) that the number of active manufacturer built pistonresponses is within plus or minus 2(1.2) percent, or 2.4 percent of 2,684.
5.3.2 Non-Sampling Error
Non-sampling error can be reduced through survey design, although the amount ofreduction is difficult, if not impossible, to quantify in any given design. Thereare, however, various techniques which can limit non-sampling error. Several ofthese techniques were incorporated into the design of the Rotorcraft ActivitySurvey and are itemized below:
1) A second mailing and third mailing with an enclosed published articleby the FAA Administrator were'mailed in addition to the original mailingin order to improve the response rate, since a low response rate may be amajor cause of non-sampling error due to the fact that nonrespondents Mayhave different characteristics than respondents. The responses byrotorcraft type are listed in Table A.4. The data reveal a continuingproblem with the sample frame because of incorrect addresses.
2) The survey questionnaire was designed to minimize misinterpretation ofquestions by the otorcraft owners.
3) Comprehensive editing procedures insured the accuracy of the datatranscription to machine readable form and the internal consistency ofresponses.
4) The official and most accurate source of information available on thecivil fleet, the FAA Aircraft Registration Master File, provided therotorcraft census list. This was supplemented by a listing of rotorcraftoperators provided by the Helicopter Foundation International.Unfortunately, the high rate of postal returns reflects a seriously out-of-date rotorcraft file.
TABLE A.4 RESPONSE RATE BY ROTORCAFT TYPE
RESPONSE RATE RESPONSE RATEROTORCRAFT TYPE WITH POSTAL RETURNS ADJUSTED FOR POSTAL RETURNS
Manufacturer BuiltPiston 62.3% 76.0%Single Engine Turbine 70.5% 85.9%Multiengine Turbine 66.3% 80.1%
Amateur Built 54.7% 66.7%
A-7
0 Figure A.2 First Cover LetterUSDP1I1SI1800 Indspeidence Ave.. S.WUSMSM WaShangton. D C 20591
A~tdnlioh~ F.-.
March 1990
Dear Rotorcraft Owner:
As you well know, rotorcraft are playing an increasing role in aviation these days. Because of thisincreased role, the FAA is conducting a one-time special survey covering all rotorcraft.
The information collected will help all of us understand more about rotorcraft activities, their needs forair traffic facilities and services, and for assessing the impact of rotorcraft on the National AirspaceSystem. These data will be used by the Federal, state, and local governments, as well as by privateindustry and individuals, for safety analysis, planning, forecasting, research and development.
The enclosed 1989 Rotorcraft Activity Survey questionnaire requests information for calendar year1989.
After reading the instructions and the information on the back of this letter, please answer all thequestions for the aircraft identified on the form and mail it today.
If you have any questions or need further assistance, please call Ms. Patricia Beardsley at(202) 267-8032 or Mr. Shung-Chai Huang at (202) 267-9943.
We appreciate your participation.
Sincerely,
Manager, Management Standardsand Statistics Division
Enclosure
A-8
The 1989 Rotorcraft Activity Survey
Why does the FAA collect this information? We realize, that by doing this, we will get duplicateforms for some aircraft, but we will be able to elimi-
Tbeinformaioncollectedbythe surveywillbe used nate duplicate responses. We would rather take thisin a variety of ways. It will help the FAA to deter- additional step than risk missing an aircraft. So whethermine the need for changes to some of our regulations you are an owner, operator, or both please completeand the impact of those changes, and to pinpoint the form as best you can and return it to us.potential safety problems. The information also willhelp us to forecast rotorcraft activity and to help What should I do?keep our Rotorcraft Master Plan up to date.
IF Your rotorcraft, for whatever reasons, was not inWill the survey responses be kept confidental? use during calendar year 1989, answer questions
1-9 and return the questionnaire to FAA. TheAbsolutely!!! The information you provide will not fact that your rotorcraft was not flown during thebe published or released in any form that would year is just as important as the fact that it wasreveal specific information reported by any indi- flown.vidually identifiable respondent.
IF You cannot provide a precise answer to any ques-Why was I selected for this survey? tions, make your best estimate.
The survey covers all rotorcraft registered with the IF You are no longer in possession of this rotorcraftFAA as of December 31,1989. The Registry shows but were the registered owner on December 3 1,you as the registrant of this aircraft on that date. If 1989, try to answer all the questions.you own more than one rotorcraft, you will receivea questionnaire foreach. Please answer all questions IF your rotorcraft was sold prior to December 31,for the aircraft identified on the questionnaire. 1989, please forward this mail to the new owner
for response.It is very important that we receive a survey ques-tionnaire for each and every rotorcraft registered as IF Your rotorcraft was stolen, destroyed, lost, do-of December 31, 1989 so we can make accurate natedtoan organization, orotherwise notin youractivity estimates for the various rotorcraft models possession, and you have not yet notified theand missions. In some cases the aircraft is not FAA Registry, do so immediately by writing to:operated by the registered owner, but is actuallybeing operated by another party under a long term Aircraft Registration Branch, AVN-450operator or lessee arrangement. To increase the 7500 South MacArthur Blvd.chances of covering 100% of the fleet, we are also Oklahoma City, OK 73125mailing apackage of blank questionnaires to alist ofoperators provided by the rotorcraft industry. The signature of the rotorcraft owner of record is
required to make any changes to the aircraft reg-IF You receive questionnaires as both a registered istration record.
owner and an operator, complete whicheverform is the most convenient for you. If you have any questions regarding the registra-
tion of your aircraft, please call (405) 686-3116.IF You are the owner, but not the operator and
cannot complete the form, please send it to theoperator. Please do not assume that the operatorhas received a questionnaire. That companymay not be on our list.
A-9
Figure A.3 Second Cover Letter
LISDPO~flOW NWdPsndnAv. SWO ior"hI Waow on. DC 20601
April 1990
Dear Rotorcraft Owner:
In March we sent you a 1989 Rotorcraft Activity Survey questionnaire. The iWormaton collected by this
survey will be used to help all of us understand more about rotorcrJ activity and their missions.
As of this date, we have not received your response. In case our first mailing never reached you or wasmisplaced, we have enclosed another questionnaire and a return, postage-paid envelope.
I urge you to read the instructions and information on the back page of tfis letr, complete thequestionnaire for the aircraft identidfed on the form, and use the enclosed envelope to return it to us
today.
If you have any questions or need further assistance, please contact Ms. Patricia Beardsley at (202)
267-8032 or Mr. Shung-Chai Huang at (202) 267-9943.
We appreciate your participation.
Sincerely,
Be rt LariManager, Management Standards
and Statistics Division, AMS-400
Enclosure
A-10
The 1989 Rotorcraft Activity Survey
Why does the FAA collect this tnuforuton? We realize, that by doing this, we will get duplicateforms for some aircraft, but we will be able to elimi-
"he information collectedby the survey will be used nate duplicate responses. We would rather take thisin a variety of ways. It will help the FAA to deter- adds l step don dsk misng an ainaf So whethermine the need forchangesto some ofourregulations you am an owner, operator, or both please completeand the impact of those changes, and to pinpoint the form as best you can and return it to us.potential safety problems. The information also willhelp us to forecast rotorcraft activity and to help What shoud I do?keep our Rotorcraft Master Plan up to date.
IF Your rotorcraft, for whatever reasons., was not inWill the survey responses be kept confdential? use during calenda year 1989, answerquestions
1-9 and return the questionnaire to FAA. TheAbsolutely!!! The inform ation you provide will not fact that your rotorcraft was not flown during thebe published or released in any form that would year is just as important as the fact that it wasreveal specific information reported by any indi- flown.vidually identifiable respondent.
IF You cannotprovide a precise answertoany ques-Why was I selectedfor this survey? tions, make your best estimate.
The survey covers all rotorcraft registered with the IF You ae no longer in possession of this mtorcraftFAA as of December 31,1989. The Registry shows but were the registered owner on December 31,you as the registrant of this aircraft on that date. If 1989. try to answer all the questions.you own more than one rotorcraft, you will receiveaquestitnnaire foreach.Please answerallquestions IF your rotorcraft was sold prior to December 31,for the aircraft identified on the questionnaire. 1989, please forward this mail to the new owner
for response.It is very important that we receive a survey ques-tionnaire for each and every rotorcraft registered as IF Your totorcraft was stolen, destroyed, lost, do-of December 31, 1989 so we can make accurate natedtoan organization, orotherwisenotinyouractivity estimates for the various rotorcraft models possession. and you have not yet notified theand missions. In some cases the aircraft is not FAA Registry, do soimmediately by writing to:operated by the registered owner, but is actuallybeing operated by another party under a long term Aircraft Registration Branch, AVN450operator or lessee arrangement. To increase the 7500 South MacAnhur Blvd.chances of covering 100% of the fleet, we am also Oklahoma City, OK 73125mailing a package ofblank questionnairesto alistofoperators provided by the rotorcraft industry. The signature of the rotorcraft owner of recm is
required to make any changes to the aircraft reg-IF You receive questionnaires as both a registered istration reod.
owner and an operator, complete whicheverform is the most convenient for you. If you have any questions regarding the registra-
tion of your aircraf please call (405) 6803116.IF You are the owner, but not the operator and
cannot complete the form, please send it to theoperator. Please do not assume that the operatorhas received a questionnaire. That companymay not be on our list.
A-I
0 Figure A.4 Third Cover Letter
US DeParSert o aenwe Ave. SWO( sw Washmgton. D C 20591r.derri AvkffmAdmndsftvffi
July 1990
Dear Rotorcraft Owner:
This is your last opportunity to participate in the 1989 Rotorcraft Activity Survey.
In March and April, we asked you to complete the survey questionnaire which will be used to makeestimates of rotorcraft activity. We have not yet received your response.
To make accurate activity estimates, we need information for each and every rotorcraft registered withthe FAA as of December 31, 1989. Please consider completing the enclosed survey form and sending itback to us. (Instructions are on the back of this letter.)
If you have any reservations or questions about completing the form, or need further assistance, pleasecall Ms. Patricia Beardsley at (202) 267-8032 or Mr. Shung-Chai Huang at (202) 267-9943.
We appreciate your cooperation.
Sincerely,
Manager Mana gement Standardsand Statistics Division, AMS-400
Enclosure
A-12
The 1989 Rotorcraft Activity Survey
Why does the FAA collect this information? We realize, that by doing this, we will get duplicateforms for some aircraft, but we will be able to elimi-
Theinformation collected by the survey will be used nate duplicate responses. We would rather take thisin a variety of ways. It will help the FAA to deter- additional tepthan risk missing an aircraft So whethermine the need for changes to some ofour regulations you are an owner, operator, or both please completeand the impact of those changes, and to pinpoint the form as best you can and return it to us.potential safety problems. The information also willhelp us to forecast rotorcraft activity and to help What should I do?
keep our Rotorcraft Master Plan up to date.IF Your rotorcraft, for whatever reasons, was not in
Will the survey responses be kept confidential? use during calendar year 1989, answer questions1-9 and return the questionnaire to FAA. The
Absolutely!!! The information you provide will not fact that your rotoreraft was not flown during thebe published or released in any form that woWd year is just as important as the fact that it wasreveal specific information reported by any indi- flown.vidually identifiable respondent.
IF You cannot provide a precise answer to any ques-Why was I selected for this survey? tions, make your best estimate.
The survey covers all rotorcraft registered with the IF You are nolongerin pot -ssion of this otorcraftFAA as of December 31, 1989. The Registry shows but were the registered owner on December 31,you as the registrant of this aircraft on that date. If 1989, try to answer all the questions.you own more than one rotorcraft, you will receivea questionnaire foreach. Please answerall questions IF your rotorcraft was sold prior to December 31,for the aircraft identified on the questionnaire. 1989, please forward this mail to the new owner
for response.It is very important that we receive a survey ques-tionnaire for each and every mtorcraft registered as IF Your rotorcraft was stolen, destroyed, lost, do-of December 31, 1989 so we can make accurate natedtoan organization, orotherwisenotinyouractivity estimates for the various rotorcraft models possession, and you have not yet notified theand missions. In some cases the aircraft is not FAA Registry, do so immediately by writing to:operated by the registered owner, but is actuallybeing operated by another party under a long term Aircraft Registration Branch, AVN-450operator or lessee arrangement. To increase the 7500 South MacArthur Blvd.chances of covering 100% of the fleet, we are also Oklahoma City, OK 73125mailing a package of blank questionnaires to alist ofoperators provided by the rotorcraft industry. The signature of the rotorcraft owner of record is
required to make any changes to the aircraft reg-IF You receive questionnaires as both a registered istration record.
owner and an operator, complete whicheverform is the most convenient for you. If you have any questions regarding the registra-
tion of your aircraft, please call (405) 680-3116.
IF You arc the owner, but not the operator andcannot complete the form, please send it to theoperator. Please do not assume that the operatorhas received a questionnaire. That companymay not he on our list.
A-13
Figure A.5 Special Insert in Third Mailing
ASK THE _"_ _ADMINISTRATOR
FAA Helicopter Survey Will Improve Services to Userstransportation, and aerial observation by use category, total lifetime airframeand application. hours, number of landings, and the state
Rotorcraft commercial passenger where the aircraft is based. Categoriestraffic does not appear to be significant of use include areas such as commutertoday when compared to national totals; air carrier, business transportation, andhowever, I believe we will see rapid aerial observation. The survey is broadgrowth in the commercial passenger and covers the full spectrum of Generalarea this decade. With new and Aviation aircraft fixed-wing poweredimproved passen ger- friendly, aircraft, rotorcraft, gliders, blimps,all-weather, turbine-powered dirigibles, and balloons.helicopi coming into the fleet, and Although rotorcraft are included inthe potential that tiltrotor technoloy the GA Surveys, their data is notoffers, the rotmcraft industry should categorized such that it clearly andin a position to capture an increasing completely describes rotorcraftmarket share of short-haul passengers. operations, and the GA Survey does not
Our planning studies indicate that by collect data on types of landing facilities2010 rotorcraft could provide as much used by rotorcraft. Therefore, the data isas 10 percent of intercity air passenger not segmented into all the areas of
James B. Busey operations capacity in the National particular interest to rotorcraft ownersAdministrator, Federal Aviation Airspace System. This would represent and operators. This additionalAdministration phenomenal growth. These forecasts information is captured in the new
are driven by two key factors: First, by survey.the end of this decade the number of Another concern is that rotorcraft
Ask the Administrator is a regular capacity-constrained airports in this rer oncy 4 that of the
feature column in Rotor magazine. It country is expected to almost double registered general aviation fleet that isreaches the top leaders of the civil from 22 to 37. Secondly, improved being sampled. As aresult, year-to-yearhelicopter industry and serves as a helicopters and tiltrotors will be rotorcraft data showed more varialitydirect communication link between tha than we would like to see. The one-timerotorcraft community and the FAA reliably,100 percent survey will enable us toAdministrator. routes and runways. The FAA is accurately describe helicoptercommitted to doing the necessary air
Mr. Administrator: The FAA has traffic control and airspace work to operations in 1989. This data will serverecently initiated a survey of all permit this to happen. We are also as a base for current decisions andhelicopters registered in the United committed to doing our share to support improve forecasts and future planning.States. state and local governments and I believe it will aid manufacturers and
An earlier survey was done under developers in their efforts to bring operators in developing strategies that
FAA contract with participation of her public use heliports and vertiports will be beneficial to the overall growth
Helicopter Foundation International on-line, and health of the industry.
(HFI), and in cooperation with HAl's The 1989 Rotorcraft Activity Survey Questionnaires were mailed in lateSafety Through Accurate Technical will help the Federal Aviation March, 1990. The response rate hasStatistics (S.T.A.T.S.) Program, which Administration improve the services it been good, by mid-June, over 60% ofrecommended follow on 100 per cent provides to system users. To make the survey forms were completed andsurveys annually. decisions on what services are needed, submitted to FAA. Since our goal is to
and in which locations, we need collect data on all helicopters, we areWhat do you plan to accomplish with accurate operations data. This data is now taking steps to encourage owners
the survey, and when will the results be also important for improving our and operators, who have not as yetavailable. rotorcraft forecasts, which serve as a responded, to fill out their forms. Data
Answer: It has become clear t foundation for planning and collection should be completed by thethat rotorcraft are playing an development of future strategies. The end of July and survey results will beincreasingly important role in U.S. 100 percent rotorcraft activity survey is availableby the end of the year. I'm sureaviation. Helicopters have become a targeted at developing this industry that you in the industry are as anxiousdominant force in specialized areas data. as I am to see the results of this survey.such as servicing the natural resource Since 19T, theFAA, using sampling The survey could not be successfulindustry, including oil exploration and techniques, has collected general without the cooperation of the ownersproduction, forestry and agriculture, aviation activity information as part of and operators. The FAA has appreciatedand in law enforcement and emergency its General Aviation Activity and the interest and support that themedical services. Other imponant areas Avionics (GA) Survey. The activity industry, and the Helicoptercontinue to grow. These include air taxi information collected includes such Association International. has given tocharter, executive and business items as toal flight hours, flight hours this effort.
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APPENDIX C
DEFINITIONS OF ROTORCRAFT EXPANDED USE CATEGORIES
Aerial Application- -Use of the aircraft for the distribution of things; includesoperations under FAR Part 137, Agricultural Aircraft Operations, and alsoactivities like crop dusting, insect control, fish stocking, fire fighting, andfertilization.
Aerial Observation--Use of the aircraft as an observation platform. Examplesinclude: mapping, photography, survey, patrol, search and rescue, highwaytraffic advisory, sightseeing, ranching, surveillance, oil and mineralexploration, criminal pursuit, and fish spotting.
Air Taxi--Passenger and cargo operations for hire under FAR Part 135: Air Taxiand Commercial Operators, excluding commuters and Emergency Medical Service(EMS).
Business Transportation--Individual use of an aircraft for business reasons.
Commutet Air Carrier--Scheduled (at least five scheduled round trips per week)passenger and cargo operations under FAR Part 135: Air Taxi and CommercialOperators.
Company/Executive Transportation- -Transportation of company personnel, guest, orcargo, with a professional crew (not under FAR Part 135, Air Taxi and CommercialOperators). Examples include: transporting parts or crews to off-shore oilrigs, transporting fire fighters to fires, and bank paper transfer.
Emergencv Medical Service (ENS)--Transporting people for medical care, ortransporting donor organs for transplant.
o Under FAR Part 135, Air Taxi and Commercial Operators;o Not under FAR Part 135.
External Load--Operations under FAR Part 133, Rotorcraft External LoadOperations. Examples include helicopter hoist and hauling logs.
Instructional--Flying under the supervision, or specific direction, of a flight
instructor.
Other--R&D, experimentation, testing, air shows, demonstrations.
Other Work Use- -Construction work, aerial advertising, pollinating, movie making.
Personal/Recreational--Individual flying for personal, non-business reasons.
U.S. G.P.O.:1991-521-778:40028 C-1
