Though still much smaller than air passenger transportation, air freight is an increasingly important revenue source for the air transportation industry. It includes both freight handled by dedicated air cargo handlers and air cargo shipped on combined passenger and air freight carriers (passenger luggage is not considered cargo for this purpose). A revenue ton-mile is equal to one ton carried one mile and measures utilization of air-freight services. The data include both transborder and foreign flights by large U.S. carriers, but not include any flights by foreign carriers.
|Domestic Freight Aviation||Apr-04||Apr-05|
|Revenue ton-miles (billions)||1.35||1.33|
|Percent change from same month previous year||21.62||-1.34|
NOTES: The current value is compared to the value from the same period in the previous year to account for seasonality.
The data have been adjusted to have a standard 30-day month by multiplying the data for each month by the ratio: 30/(actual days in month).
The dramatic changes in the September 2001 data reflect the impact of the terrorist attacks on Sept. 11, 2001, on aviation, including several days in which commercial air operations were suspended.
The data reported here excludes small-certificated and commuter carriers that began reporting T100 data in 2002 for comparability with previous issue.
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, Air Carrier Traffic Statistics Monthly, July 2005.