11.   Pilot fatigue is among several potential factors the National Transportation Safety Board has been investigating.

12.   Improper maintenance and pilot fatigue often were cited as causes of disasters involving Korean Air planes in the past.

13.   Improper maintenance and pilot fatigue were commonly cited as leading causes of disasters involving Korean Air.

14.   Leitch noted that the ATA and RAA said other rules and contract provisions deal with pilot fatigue and that a stay would not affect those other rules.

15.   One safety concern for commuter flights is pilot fatigue from demanding schedules.

16.   Rubin asked regulators to force American to add a third pilot on the flight to prevent pilot fatigue.

17.   The RAA cited a rule that would guard against dangers of pilot fatigue.

18.   They also say constant scheduling changes by Cathay contribute to pilot fatigue.

19.   They say constant scheduling changes contribute to pilot fatigue.