Table 4-8M:  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 kilometers flown per aircraft (thousands),784,"1,074","1,528","1,408","1,236","1,191","1,250","1,239","1,077","1,129","1,170","1,222","1,260","R1,279","R1,236","R1,268",U
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Aircraft-kilometers (millions),,,,,,,,,,,,,,,,,
Domestic operations,"1,381","1,825","3,328","3,135","4,060","4,902","6,378","6,202","6,429","6,690","7,049","7,450","7,743","R7,947","R8,109","R8,496","9,028"
International operations,293,457,764,607,645,668,"1,223","1,299","1,455","1,547","1,577","1,606","1,679","R1,791","R1,912","R1,942","2,023"
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Fuel consumption (million liters),,,,,,,,,,,,,,,,,
Domestic operations,"7,397","14,721","29,742","28,610","34,432","38,289","47,049","43,555","44,528","45,270","47,227","48,499","49,918","51,709","52,530","R54,518","56,194"
International operations,"2,143","4,845","8,491","7,378","7,336","9,418","15,002","14,915","15,596","15,569","16,319","17,076","17,632","18,791","19,631","R19,873","20,725"
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Aircraft-kilometers flown per liter,,,,,,,,,,,,,,,,,
Domestic operations,0.19,0.12,0.11,0.11,0.12,0.13,0.14,0.14,0.14,0.15,0.15,0.15,0.16,0.15,0.15,R0.18,0.08
International operations,0.14,0.09,0.09,0.08,0.09,0.07,0.08,0.09,0.09,0.10,0.10,0.09,0.10,0.09,0.10,0.10,0.10
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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NOTES: Numbers may differ slightly from previous year's metric tables because a higher precision conversion factor was used.,,,,,,,,,,,,,,,,,
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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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