Table 4-21M: Energy Intensity of Certificated Air Carriers, All Servicesa

Table 4-21M: Energy Intensity of Certificated Air Carriers, All Servicesa

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  1960 1965 1970 1975 1980 1985 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001
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 R7,903 R8,103 R8,581 R9,115 8,932
International operations 293 457 764 607 645 668 1,223 1,299 1,455 1,547 1,577 1,606 1,679 1,793 R1,918 R1,971 R2,063 2,025
Available seat-kilometers (millions)                                    
Domestic operations 84,040 152,545 343,048 388,306 556,878 717,487 906,165 874,901 897,996 919,722 942,171 971,910 1,008,075 R1,049,160 R1,065,889 R1,125,463 R1,170,046 1,134,195
International operations 21,480 47,529 83,622 99,335 139,220 164,094 274,087 276,101 313,474 322,112 320,087 326,954 335,841 R368,039 R382,280 R391,040 R408,851 395,538
Passenger-kilometers (millions)                                    
Domestic operations 49,177 83,504 167,608 211,996 322,334 435,463 547,549 535,213 559,941 569,993 609,925 635,221 684,930 R725,190 R745,548 R785,934 R830,629 782,880
International operations 13,367 27,019 44,358 50,022 87,489 105,925 189,412 185,701 210,216 218,079 225,937 234,881 246,337 R272,552 R277,218 R290,115 R310,278 287,078
Fuel consumed (million liters)                                    
Domestic operations 7,397 14,721 29,742 28,610 32,249 38,289 47,050 43,557 44,527 45,268 47,225 48,498 49,919 51,707 52,530 54,518 56,193 53,062
International operations 2,143 4,845 8,491 7,378 6,614 9,418 15,002 14,913 15,596 15,571 16,318 17,078 17,633 18,791 19,629 19,875 20,724 19,826
Seats per aircraft                                    
Domestic operations 60.9 83.6 103.1 123.9 137.1 146.4 142.1 141.1 139.7 137.4 133.7 130.5 130.2 R132.7 R131.5 R131.1 R128.4 127.0
International operations 73.3 104.0 109.4 163.7 215.7 245.7 224.1 212.6 215.5 208.7 203.0 203.6 200.1 R205.3 R199.2 R198.3 R198.2 195.4
Seat-kilometers per liter                                    
Domestic operations 11 10 12 14 17 19 19 20 20 20 20 20 20 R20 R20 R21 R21 21
International operations 10 10 10 13 21 17 18 19 20 21 20 19 19 R20 R20 R20 R20 20
Energy intensity (kilojoule / passenger-kilometer)b                                    
Domestic operations 5,659 6,633 6,677 5,078 3,764 3,308 3,233 3,062 2,992 2,988 2,913 2,873 2,742 R2,683 R2,651 R2,610 R2,546 2,550
International operations 6,031 6,748 7,202 5,550 2,845 3,345 2,980 3,022 2,792 R2,687 R2,717 2,735 2,693 R2,594 R2,664 R2,578 R2,513 2,599
Load factor (percent)                                    
Domestic operations 58.5 54.7 48.9 54.6 58.0 60.7 60.4 61.2 62.4 62.0 64.7 65.4 67.9 69.1 R69.9 69.8 R71.0 69.0
International operations 62.2 56.8 53.0 R50.4 62.8 64.6 69.1 67.3 67.1 67.6 70.6 71.8 73.3 74.1 R72.5 R74.2 R75.9 72.6

KEY: R = revised.

a U.S. owned carriers only. Operation of foreign-owned carriers in or out of the United States not included.

b Calculation based on unrounded figures not shown here.

NOTES

Aircraft-kilometers includes all four air-carrier groups (majors, nationals, large regionals, and medium regionals), scheduled and charter, passenger, and all-cargo. Fuel consumed includes majors, nationals, and large regionals, scheduled and charter, passenger, and all-cargo.

Passenger-kilometers includes all four air-carrier groups, scheduled and charter, passenger service only.

International operations include operations outside the United States, including those between the United States and foreign countries and the United States and its territories or possessions.

Heat equivalent factor used for joule conversion is 37,626,700 joules/liter.

1.609344 kilometers = 1 mile.

3.785412 liters = 1 gallon.

SOURCES

Aircraft-kilometers, available seat-kilometers, passenger-kilometers, and load factor:

1960-80: Air Transport Association, Internet site http://www.air-transport.org/public/industry, as of July 31, 2002.

1985-2001: U.S. Department of Transportation, Bureau of Transportation Statistics, Office of Airline Information, Air Carrier Traffic Statistics (Washington DC: Annual December issues).

Fuel consumed:

1960-2000: U.S. Department of Transportation, Bureau of Transportation Statistics, Office of Airline Information, Internet site http://www.bts.gov/oai/fuel/fuelyearly.html as of Aug. 12, 2002.

Seats per aircraft, seat-kilometers per liter, and energy intensity:

Derived by calculation.