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Can a pilot simulate an emergency call for practice purposes on the frequency 121.5 MHz?

  • A

    No, the use of this freqency for practice is prohibited by the Air Navigation Order

  • B

    No, this frequency is 'guarded' for genuine emergencies only

  • C

    Yes, providing the state of 'Distress' is not simulated

  • D

    Yes, providing agreement is obtained from the CAA in writing 5 days in advance

Note: This is perhaps a UK specific question.

The frequency 121.500 MHz is designated as the emergency channel for aviation as defined in Annex 10 Volume V to the ICAO Convention on International Civil Aviation. The annex states that the emergency channel shall only be used for genuine emergency purposes.

That said, permission for pilots in UK airspace to conduct practice emergency calls on 121.500 MHz exists. Within the London and Scottish FIRs/UIRs, the emergency channel 121.500 MHz may be used for training subject to the following:

  • a) The pilot must be undertaking training on the emergency channel 121.500 MHz with the Distress and Diversion (D&D) Cell.
  • b) Transmissions made on the emergency channel 121.500 MHz must be limited to the extent necessary to achieve their aim, in order to reduce the impact upon aircraft in distress or emergency, other crews monitoring 121.500 MHz, and air traffic services units where 121.500 MHz is monitored.

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