Duty time

Duty Time
Duty time is the portion of the day when a crew member is on duty in any capacity. The FAA limits the amount of time that is allowed on duty. No period of scheduled reserve may exceed 14 hours in any 24-hour period.

Additional factors contributing to the cause were the inadequacy of the flight and duty time regulations applied to 14 cfr, part 121, supplemental air carrier, international operations, ...

See also: Charter, Landing, Plane, Piston, Altitude