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Which one of the following radiotelephony messages has priority over a flight safety message?

  • A

    Meteorological message

  • B

    Communication related to direction finding

  • C

    Flight regularity message

  • D

    Aircraft position report message

ICAO Annex 10 Volume II
5.1.8 Categories of messages

The categories of messages handled by the aeronautical mobile service and the order of priority in the establishment communications and the transmission of messages shall be in accordance with the following table.

Message category and order of priority signal Radiotelephony signal
  1. Distress calls, distress messages and distress traffic
 MAYDAY
  1. Urgency messages, including messages preceded by the medical transports signal
 PAN, PAN or PAN, PAN MEDICAL
  1. Communications relating to direction finding
 ___
  1. Flight safety messages
 ___
  1. Meteorological messages
 ___
  1. Flight regularity messages
 ___

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