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
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 1,793 R1,912 R1,942 2,023
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 R1,036,245 R1,045,150 R1,103,120 1,145,322
International operations 21,480 47,529 83,622 99,335 139,220 164,094 274,087 276,101 313,474 322,112 320,087 326,954 335,841 349,088 R361,850 R371,633 389,860
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 R715,827 R756,788 R770,210 815,163
International operations 13,367 27,019 44,358 50,022 87,489 105,925 189,412 185,701 210,216 218,079 225,937 234,881 246,337 258,749 263,379 R277,588 296,382
Fuel consumed (million liters)                                  
Domestic operations 7,397 14,721 29,742 28,610 R32,248 38,289 47,049 43,555 44,528 45,270 47,227 48,499 49,918 51,709 52,530 54,518 56,194
International operations 2,143 4,845 8,491 7,378 R6,613 9,418 15,002 14,915 15,596 15,569 16,319 17,076 17,632 18,791 19,631 19,873 20,725
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 R130.4 R128.9 R129.8 126.9
International operations 73.3 104.0 109.4 163.7 215.7 245.7 224.1 212.6 215.5 208.7 203.0 203.6 200.1 194.7 R189.3 R191.3 192.8
Seat-miles per gallon                                  
Domestic operations 11 10 12 14 R17 19 19 20 20 20 20 20 20 20 20 20 20
International operations 10 10 10 13 R21 17 18 19 20 21 20 19 19 19 18 19 19
Energy intensity (Kilojoules/passenger-kilometer)b                                  
Domestic operations 5,659 6,633 6,677 5,078 R3,764 3,308 3,233 3,062 2,992 2,988 2,913 2,873 2,742 2,718 R2,612 R2,664 2,593
International operations 6,031 6,748 7,202 5,550 R2,845 3,345 2,980 3,022 2,792 2,687 2,728 2,735 2,693 2,733 2,805 R2,694 2,631
Load factor (%)                                  
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 R72.4 69.8 71.2
International operations 62.2 56.8 53.0 54.4 62.8 64.6 69.1 67.3 67.1 67.6 70.6 71.8 73.3 74.1 72.8 R74.7 76.0

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 joules conversion is 37,626,700 joules/liter.

Numbers may differ slightly from previous year's metric tables because a higher precision conversion factor was used.

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 5, 2000.

1985-2000: 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 July 25, 2001.

Seats per aircraft, seat-kilometers per liter, and energy intensiveness: Derived by calculation.