Distress Phase 1 (DETRESFA)
Distress Phase 1 (DETRESFA) : (1) A phase that begins when (a) the fuel on board is considered to be exhausted or to be insufficient to enable the aircraft to land safely; (b) information is received that indicates that the operating efficiency of the aircraft has been impaired to the extent that a forced landing is likely; or (c) information is received that the aircraft is about to make, or has made, a forced landing. See also: Emergency Phase (2) (ICAO) A situation wherein there is reasonable certainty that an aircraft and its occupants are threatened by grave and imminent danger or require immediate assistance. See also: Emergency Phase
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