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

Table 4-21: 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 2002 2003 2004
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 4,911 5,035 5,332 5,664 5,548 5,616 (R) 6,085 6,552
International operations 182 284 475 377 401 415 760 807 904 961 980 998 1,043 1,114 1,192 1,225 1,282 1,266 1,225 (R) 1,262 1,384
Available seat-miles (millions)                                          
Domestic operations 52,220 94,787 213,160 241,282 346,028 445,826 563,065 543,638 557,989 571,489 585,438 603,917 626,389 651,918 662,313 699,330 727,033 695,200 676,949 (R) 689,069 739,540
International operations 13,347 29,533 51,960 61,724 86,507 101,963 170,310 171,561 194,784 200,151 198,893 203,160 208,682 228,689 237,538 242,981 254,048 235,311 215,606 (R) 204,755 229,437
Passenger-miles (millions)                                          
Domestic operations 30,557 51,887 104,147 131,728 200,289 270,584 340,231 332,566 347,931 354,177 378,990 394,708 425,596 450,612 463,262 488,357 516,129 486,506 482,310 (R) 505,159 556,690
International operations 8,306 16,789 27,563 31,082 54,363 65,819 117,695 115,389 130,622 135,508 140,391 145,948 153,067 169,356 172,255 180,269 192,798 178,343 171,860 (R) 168,605 193,961
Fuel consumed (million gallons)                                          
Domestic operations 1,954 3,889 7,857 7,558 8,519 10,115 (R) 12,323 11,506 11,763 11,959 (R) 12,384 (R) 12,672 (R) 13,217 (R) 13,563 (R) 13,335 14,402 14,845 14,017 12,848 12,959 13,623
International operations 566 1,280 2,243 1,949 1,747 2,488 (R) 3,909 3,940 4,120 4,113 (R) 4,279 (R) 4,443 (R) 4,618 (R) 4,915 (R) 4,923 5,250 5,475 5,237 4,991 4,836 4,931
Seats per aircraft                                          
Domestic operations 60.9 83.6 103.1 123.9 137.1 146.4 142.1 141.1 139.7 137.5 133.7 130.5 130.2 132.7 131.5 131.2 128.4 125.3 120.5 (R) 113.2 112.9
International operations 73.3 104.0 109.4 163.7 215.7 245.7 224.1 212.6 215.5 208.3 203.0 203.6 200.1 205.3 199.3 198.4 198.2 185.9 176.1 (R) 162.3 165.8
Seat-miles per gallon                                          
Domestic operations 27 24 27 32 41 44 (R) 46 47 47 48 (R) 47 (R) 48 (R) 47 (R) 48 (R) 50 49 49 50 53 (R) 53 54
International operations 24 23 23 32 50 41 (R) 44 44 47 49 (R) 46 (R) 46 (R) 45 (R) 47 (R) 48 46 46 45 43 (R) 42 47
Energy intensity (Btu/passenger-mile)b                                          
Domestic operations 8,633 10,118 10,185 7,746 5,742 5,047 (R) 4,890 4,671 4,564 4,558 (R) 4,411 (R) 4,334 (R) 4,193 (R) 4,063 (R) 3,886 3,981 3,883 3,890 3,596 (R) 3,463 3,304
International operations 9,199 10,292 10,986 8,465 4,339 5,103 (R) 4,484 4,609 4,258 4,098 (R) 4,114 (R) 4,109 (R) 4,073 (R) 3,918 (R) 3,858 3,932 3,833 3,965 3,920 (R) 3,872 3,432
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 69.9 69.8 71.0 69.1 70.3 (R) 72.6 74.4
International operations 62.2 56.8 53.0 50.4 62.8 64.6 69.1 67.3 67.1 67.6 70.6 71.8 73.3 74.1 72.5 74.2 75.9 72.8 76.6 76.5 79.1

KEY: Btu = British thermal unit; 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-miles 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-miles 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 Btu conversion is 135,000 Btu/gallon.

SOURCES

Aircraft-miles, available seat-miles, passenger-miles, 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-miles per gallon, and energy intensiveness:

Derived by calculation.