Number and Percent of Flights with Tarmac Times of 3 Hours or More
|Number of regularly scheduled flights||Tarmac times of 3 hours or longer||Stage of operation of the 3-hour tarmac time|
|Total||Percent||Prior to cancellation||Multiple gate departure||Taxi-out||Taxi-in||At diversion airport|
NOTE: January 2009 includes one flight with two separate 3-hour tarmac times. Northwest Flight 1491 on Jan. 28, 2009 was on the tarmac for 188 minutes before returning to the gate. The flight departed the gate a second time and was on the tarmac for 199 minutes before wheels-off. Details of the flight are listed as a 3-hour multiple gate departure and a 3-hour Taxi-out. Table 12 of the Air Travel Consumer Report lists number of flights with three-hour tarmac times and counts NW Flight 1491 as a single flight.
Explanation of Stage of Operation
Prior to cancellation: Flight left the gate but was cancelled at the origin airport.
Multiple gate departure: Flight left the gate, then returned and then left again to resume normal operation. Tarmac time is the time before the return to the gate.
Taxi-out: The time between gate departure and wheels-off.
Taxi-in: The time between wheels-on and gate arrival.
At diversion airport: The tarmac time at the alternate airport.
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, Office of Airline Information, Tarmac Times, available at http://www.bts.gov/ as of July 2010.