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Table 2 Monthly Summary of Three-Hour Tarmac Times Oct 2008-Jan 2009
Table 2 Monthly Summary of Three-Hour Tarmac Times Oct 2008-Jan 2009
Number and Percentage of Flights with Tarmac Times of Three
Hours or More
For an explanation of the new reports, see
New Tarmac Time Data Q&A
| 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 | ||
| Oct 2008 | 556,205 | 49 | 0.01 | 2 | 6 | 35 | 0 | 6 |
| Nov 2008 | 523,272 | 7 | 0.00 | 0 | 1 | 4 | 0 | 2 |
| Dec 2008 | 544,958 | 187 | 0.03 | 40 | 14 | 116 | 7 | 10 |
| Jan 2009* | 532,339 | 87 | 0.02 | 7 | 10 | 70 | 0 | 0 |
Source: Bureau of Transportation Statistics
* Includes one flight with two separate three-hour tarmac times. Northwest Flight 1491 on Jan. 28 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 three-hour Multiple Gate Departure and a three-hour Taxi-out. Table 12 of the DOT 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