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During an urgency condition, which phrase should be transmitted three times before the urgency message?

  • A

    Help.

  • B

    Urgent.

  • C

    Mayday.

  • D

    Pan Pan.

Refer to figure.
ICAO Annex 10 Volume II
5.3 DISTRESS AND URGENCY RADIOTELEPHONY COMMUNICATION PROCEDURES

5.3.1.1 Distress and urgency traffic shall comprise all radiotelephony messages relative to the distress and urgency conditions respectively. Distress and urgency conditions are defined as:

a) Distress: a condition of being threatened by serious and/or imminent danger and of requiring immediate assistance.

b) Urgency: a condition concerning the safety of an aircraft or other vehicle, or of some person on board or within sight, but which does not require immediate assistance.

5.3.1.2 The radiotelephony distress signal MAYDAY and the radiotelephony urgency signal PAN PAN shall be used at the commencement of the first distress and urgency communication respectively.


Distress → immediate assistance required (MAYDAY)
Urgency → no immediate assistance required (PAN PAN)

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