Table 1-67: FAA-Cited Causes of Departure and En Route Delays (After pushing back from the gate)

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  1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 (R) 2000 (R) 2001 (R) 2002 (R) 2003 (R) 2004 (R) 2005 (R) 2006 (R) 2007 (R) 2008 (R) 2009 (R) 2010 (R) 2011 (R) 2012 2013
Operations delayed (thousands) 356 338 394 393 298 281 276 248 237 272 245 306 374 450 348 286 317 455 438 492 541 555 473 335 330 277 333
Cause (percent)                                                      
Weather 67 70 57 56 65 65 72 75 72 74 68 74 69 69 72 72 72 70 69 66 65 66 65 70 76 70 70
Airport terminal volume 11 9 29 33 26 25 21 18 17 17 20 13 8 14 12 14 11 15 15 16 19 20 22 19 16 17 19
Air Route Traffic Control Center volume 13 12 8 2 1 2 1 1 1 2 2 2 4 U U U U U U U U U U U U U U
Closed runways / taxiways 4 5 3 3 3 3 3 2 3 3 3 3 5 6 5 4 7 6 10 14 12 9 6 4 3 7 5
National Airspace System equipment 4 3 2 1 2 2 2 2 3 2 3 2 2 2 2 1 1 1 1 1 1 1 1 0 1 1 0
Other 1 1 1 4 3 3 2 2 4 2 4 6 13 9 10 9 9 8 5 3 3 4 6 7 5 6 6

KEY: FAA = Federal Aviation Administration; R = revised; U = data are unavailable.

NOTES

As of 2008, the FAA reports delays for aircraft that accumulate a delay of 15 minutes or more throughout the duration of the flight. Each holding segment is recorded as one delay. The Operations Network (OPSNET) Database delay data dating back to the year 2000 have been converted to be consistent with the new definitions.

Beginning in 2008 the FAA started to combine Air Route Traffic Control Center volume and Airport Terminal volume and retroactively applied this change through the year 2000.

SOURCES

1987-97: U.S. Department of Transportation, Federal Aviation Administration, Aviation Capacity Enhancement Plan (Washington, DC: Annual Issues).

1998-99: U.S. Department of Transportation, Federal Aviation Administration, Operations Network (OPSNET) Database, available at http://www.faa.gov/apa/Delays/atDelays.htm as of Aug. 8, 2002.

2000-13: Ibid., Operations Network (OPSNET) Database, available at http://www.apo.data.faa.gov/ as of Feb. 26, 2014.