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NOTES: These results, based on ongoing research, are preliminary. Operated flights includes data for large certificated carriers only.
SOURCES: U.S. Department of Transportation (USDOT), Research and Innovative Technology Administration, Bureau of Transportation Statistics (BTS), calculations using the following: Scheduled times and ATTI—USDOT, BTS, Airline Service Quality Performance data, May 2005. Flight operations—USDOT, BTS, Airline Market and Segment (T-100) data, May 2005.