Alert phase is defined as follows:
Domanda 368, Air Law - ATPL - Airline Transport Pilot license
| A situation related to an aircraft which reports that the fuel on board is exhausted. |
| A situation where an apprehension exists as to the safety of an aircraft and its occupants. |
| A situation related to an aircraft and its occupants are considered to be in a state of emergency. |
| An emergency event in which an aircraft and its occupants are considered to be threatened by a danger. |
