Figure 2,, FAA-Cited Causes of Delays: 2001,, (After pushing back from the gate),, Cause,Percentage, Weather,72, Flight volume,12, Equipment problems,2, Closed runway,5, Other,9, "SOURCE: U.S. Department of Transportation, Federal Aviation Administration, Operations Network (OPSNET) Database, available at http://www.faa.gov/programs/oep/.",,