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alert phase
трансп., авиац.	fase de alerta
alerting phase
трансп.	fase de alerta
Alert Phase ICAO
тех.	estado de alerta o fase de alerta
Английский тезаурус
alert phase
авиац.	A situation wherein apprehension exists as to the safety of an aircraft and its occupants.
авиац., авиац., ИКАО	A situation wherein apprehension exists as to the safety of an aircraft and its occupants
авиац., Канада.	A phase that begins when a following the uncertainty phase, the communication search has failed to reveal any news of the aircraft; b an aircraft has been cleared to land and fails to land within 5 min after the estimated time of landing and communication has not been re-established with the aircraft; or c information has been received that indicates that the operating efficiency of the aircraft has been impaired, but not to the extent that a forced landing is likely