In aeronautics and aviation, Loiter is a phase of flight. The phase consists of cruising for a certain amount of time over a small region. The loiter phase occurs, for general aviation, generally at the end of the flight plan, normally when the plane is waiting for clearance to land. However, some aircraft used for special purposes, like reconnaissance, may have a loiter phase in mid-flight.
Endurance
The endurance of the aircraft during the loiter phase is calculated using the following:
where:

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