Table 4-8:  Certificated Air Carrier Fuel Consumption and Travela,,,,,,,,,,,,,,,,,
,1960,1965,1970,1975,1980,1985 ,1990 ,1991 ,1992 ,1993 ,1994 ,1995 ,1996 ,1997 ,1998 ,1999  ,2000 
Number of aircraft,"2,135","2,125","2,679","2,495","3,808","4,678","6,083","6,054","7,320","7,297","7,370","7,411","7,478","7,616","8,111","8,228",U
Average miles flown per aircraft (thousands),487,667,949,932,768,740,776,770,669,701,727,759,783,R795,R768,R788,U
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Aircraft-miles (millions),,,,,,,,,,,,,,,,,
Domestic operations,858,"1,134","2,068","1,948","2,523","3,046","3,963","3,854","3,995","4,157","4,380","4,629","4,811","R4,938","R5,039","R5,279","5,610"
International operations,182,284,475,377,401,415,760,807,904,961,980,998,"1,043","R1,113","R1,188","R1,207","1,257"
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Fuel consumption (million gallons),,,,,,,,,,,,,,,,,
Domestic operations,"1,954","3,889","7,857","7,558","9,096","10,115","12,429","11,506","11,763","11,959","12,476","12,812","13,187","13,660","13,877","R14,402","14,845"
International operations,566,"1,280","2,243","1,949","1,938","2,488","3,963","3,940","4,120","4,113","4,311","4,511","4,658","4,964","5,186","R5,250","5,475"
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Aircraft-miles flown per gallon,,,,,,,,,,,,,,,,,
Domestic operations,0.44,0.29,0.26,0.26,0.28,0.30,0.32,0.33,0.34,0.35,0.35,0.36,0.36,0.36,0.36,R0.37,0.38
International operations,0.32,0.22,0.21,0.19,0.21,0.17,0.19,0.20,0.22,0.23,0.23,0.22,0.22,0.22,0.23,0.23,0.23
KEY:  R = revised; U = data are unavailable.,,,,,,,,,,,,,,,,,
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a  Aircraft operating under 14 CFR 121 and 14 CFR 135.,,,,,,,,,,,,,,,,,
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SOURCES:,,,,,,,,,,,,,,,,,
Number of aircraft:,,,,,,,,,,,,,,,,,
"1960-65: U.S. Department of Transportation, Federal Aviation Administration, FAA Statistical Handbook of Aviation, 1970 edition (Washington, DC: 1970), table 5.3.",,,,,,,,,,,,,,,,,
"1970-75: Ibid., FAA Statistical Handbook of Aviation, Calendar Year 1979 (Washington, DC: 1979), table 5.1.",,,,,,,,,,,,,,,,,
"1980-85: Ibid., FAA Statistical Handbook of Aviation, Calendar Year 1986 (Washington, DC: 1986), table 5.1.",,,,,,,,,,,,,,,,,
"1990-97: Ibid., FAA Statistical Handbook of Aviation, Calendar Year 1997 (Washington, DC: unpublished), personal communication, Mar. 19, 1999.",,,,,,,,,,,,,,,,,
"1998-99: Aerospace Industries Association, Aerospace Facts and Figures (Washington DC: Annual Issues), ""Active U.S. Air Carrier Fleet.""",,,,,,,,,,,,,,,,,
Aircraft-miles flown:,,,,,,,,,,,,,,,,,
"1960: Civil Aeronautics Board, Handbook of Airline Statistics 1969 (Washington, DC: 1970), part III, tables 2 and 13.",,,,,,,,,,,,,,,,,
"1965-70: Ibid., Handbook of Airline Statistics 1973 (Washington, DC: 1974), part III, tables 2 and 13.",,,,,,,,,,,,,,,,,
"1975-80: Ibid., Air Carrier Traffic Statistics (Washington,  DC: December 1976), pp. 4 and 14; and (December 1981), pp. 2 and 3.",,,,,,,,,,,,,,,,,
"1985-96: U.S. Department of Transportation, Bureau of Transportation Statistics, Office of Airline Information, Air Carrier Traffic Statistics (Washington, DC: Annual issues, December), pp. 2 and 3, line 27 plus line 50.",,,,,,,,,,,,,,,,,
"1997-2000: Ibid., Internet site http://www.bts.gov/programs/oai as of Aug.10, 2001.",,,,,,,,,,,,,,,
Fuel consumption:,,,,,,,,,,,,,,,
"1960-2000: U.S. Department of Transportation, Bureau of Transportation Statistics, Office of Airline Information, Internet site http://www.bts.gov/programs/oai/fuel/fuelyearly.html as of Aug. 10, 2001.",,,,,,,,,,,,,,,
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