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Table 2 Monthly Summary of Tarmac Times, October 2008 - March 2010

Table 2 Monthly Summary of Tarmac Times, October 2008 - March 2010

Number and Percent of Flights with Tarmac Times of 3 Hours or More
For an explanation of the new reports, see New Tarmac Time Data Q&A

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  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
2010                
Mar 2010 548,282 25 0.00 9 2 11 1 2
Feb 2010 481,988 61 0.01 5 1 53 1 1
Jan 2010 521,809 21 0.00 2 3 11 2 3
2009                
Dec 2009 529,269 35 0.01 5 3 22 0 5
Nov 2009 509,540 4 0.00 0 1 2 0 1
Oct 2009 531,799 12 0.00 0 0 12 0 0
Sep 2009 510,852 6 0.00 0 0 4 0 2
Aug 2009 568,301 70 0.01 7 11 45 0 7
Jul 2009 580,134 164 0.03 21 20 105 0 18
Jun 2009 557,594 278 0.05 40 42 172 1 23
May 2009 546,832 35 0.01 7 2 25 1 0
Apr 2009 537,793 81 0.02 12 10 47 0 12
Mar 2009 557,422 88 0.02 6 9 66 0 7
Feb 2009 488,410 43 0.01 5 4 34 0 0
Jan 2009* 532,339 87 0.02 7 10 70 0 0
2009 Total 6,450,285 903 0.18 110 112 604 2 75
2008                
Dec 2008 544,956 187 0.03 40 14 116 7 10
Nov 2008 523,272 7 0.00 0 1 4 0 2
Oct 2008 556,205 49 0.01 2 6 35 0 6

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.

Note: Beginning March 1, 2010, one of the four runways at New Yorks JFK International Airport was closed for construction. The closure is expected to last at least through June, and associated work will continue later into the year. The closure and associated work may cause or exacerbate flight delays for all carriers operating to/from JFK, as well as other airports throughout the National Airspace System, and should be recognized in any year-over-year comparisons.