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When an aircraft is unable to establish communication due to receiver failure, it shall transmit reports and the time of its next intended transmission on the frequency in use. Each transmission has to be preceded by the phrase..
  • A
    PAN PAN
  • B
    UNABLE TO RECEIVE
  • C
    NO RECEPTION TRANSMISSION
  • D
    TRANSMITTING BLIND DUE TO RECEIVER FAILURE

Blind transmission is a transmission from one station to another in circumstances where two-way communication cannot be established, but where it is believed that the called station is able to receive the transmission. A message containing the data detailed below, preceded by the phrase "TRANSMITTING BLIND DUE TO RECEIVER FAILURE" shall be transmitted on the frequency presently in use.


ICAO Annex 10, Volume II
5.2.2.7.1.3 Receiver failure

5.2.2.7.1.3.1 When an aircraft station is unable to establish communication due to receiver failure, it shall transmit reports at the scheduled times, or positions, on the channel in use, preceded by the phrase “TRANSMITTING BLIND DUE TO RECEIVER FAILURE”. The aircraft station shall transmit the intended message, following this by a complete repetition. During this procedure, the aircraft shall also advise the time of its next intended transmission.

5.2.2.7.1.3.2 An aircraft which is provided with air traffic control or advisory service shall, in addition to complying with 5.2.2.7.1.3.1, transmit information regarding the intention of the pilot-in-command with respect to the continuation of the flight of the aircraft.

5.2.2.7.1.3.3 When an aircraft is unable to establish communication due to airborne equipment failure it shall, when so equipped, select the appropriate SSR code to indicate radio failure.

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  • Austro Control
  • Lithuania