2.14 Distress and Urgency Communications

2.14.2 Describe the degrees of emergency that warrant:

(a) a distress call (MAYDAY); 

A distress call is the highest level of emergency communication.

A distress condition exists when an aircraft, vehicle, or person is threatened by serious and/or imminent danger and requires immediate assistance.

The distress call used in aviation is:

“MAYDAY”

A MAYDAY call should be made when the aircraft or persons on board are in grave and immediate danger.

Examples of situations that may warrant a MAYDAY call include:

• Engine failure
  • When an engine failure seriously affects the aircraft’s ability to maintain flight or continue safely.
• Loss of control
  • When the pilot is unable to maintain control of the aircraft.
• Fire or smoke on board
  • When fire, smoke, or fumes threaten the safety of the aircraft or occupants.
• Structural damage
  • When significant damage affects the aircraft’s strength, controllability, or safety.