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 1995 2000 2001 2002 2003
Aircraft-kilometers (millions)                        
Domestic operations 1,381 1,825 3,328 3,135 4,060 4,902 6,378 7,450 9,115 8,929 (R) 9,039 9,793
International operations 293 457 764 607 645 668 1,223 1,606 2,063 2,037 1,971 2,005
Available seat-kilometers (millions)                        
Domestic operations 84,040 152,545 343,048 388,306 556,878 717,487 906,165 971,910 1,170,046 1,118,816 (R) 1,089,443 1,109,112
International operations 21,480 47,529 83,622 99,335 139,220 164,094 274,087 326,954 408,851 378,696 346,984 329,483
Passenger-kilometers (millions)                        
Domestic operations 49,177 83,504 167,608 211,996 322,334 435,463 547,549 635,221 830,629 782,956 (R) 776,202 810,046
International operations 13,367 27,019 44,358 50,022 87,489 105,925 189,412 234,881 310,278 287,015 (R) 276,582 269,827
Fuel consumed (million liters)                        
Domestic operations 7,397 14,721 29,742 28,610 32,249 38,289 (R) 46,648 (R) 47,967 56,193 53,062 48,636 49,054
International operations 2,143 4,845 8,491 7,378 6,614 9,418 (R) 14,797 (R) 16,817 20,724 19,826 18,892 18,308
Seats per aircraft                        
Domestic operations 60.9 83.6 103.1 123.9 137.1 146.4 142.1 130.5 128.4 125.3 (R) 120.5 113.3
International operations 73.3 104.0 109.4 163.7 215.7 245.7 224.1 203.6 198.2 185.9 (R) 176.1 164.3
Seat-kilometers per liter                        
Domestic operations 11 10 12 14 17 19 (R) 19 (R) 20 21 21 22 23
International operations 10 10 10 13 21 17 (R) 19 (R) 19 20 19 18 18
Energy intensity (kilojoule / passenger-kilometer)b                        
Domestic operations 5,659 6,633 6,677 5,078 3,764 3,308 (R) 3,206 (R) 2,841 2,545 2,550 (R) 2,358 2,279
International operations 6,031 6,748 7,202 5,550 2,845 3,345 (R) 2,939 (R) 2,694 2,513 2,599 (R) 2,570 2,553
Load factor (percent)                        
Domestic operations 58.5 54.7 48.9 54.6 58.0 60.7 60.4 65.4 71.0 69.1 70.3 72.4
International operations 62.2 56.8 53.0 50.4 62.8 64.6 69.1 71.8 75.9 72.8 76.6 76.5

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, pas

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.

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.

1985-2004: U.S. Department of Transportation, Bureau of Transportation Statistics, Office of Airline Information, Air Carrier Traffic Statistics (Washington DC: Annual December issues).

Fuel consumed:

1960-75: 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 21, 2004.

1980-2004: Ibid., Internet site http://www.bts.gov/xml/fuel/report/src/index.xml as of Apr. 28, 2005.

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

Derived by calculation.