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If radio contact with the intercepting aircraft is established but communication in a common language is not possible, which phrase should be pronounced by the intercepted aircraft to communicate that the position is unknown?
  • A

    POSITION UNCERTAIN (POSITION UNCERTAIN)

  • B

    ORIENTATION LOSS (ORIENTATION LOSS)

  • C

    NAVIGATION LOST (NAVIGATION LOST)

  • D
    AM LOST (AM LOST)

Refer to figure.
ICAO Annex 2
APPENDIX 2. INTERCEPTION OF CIVIL AIRCRAFT
3. Radiocommunication during interception

If radio contact is established during interception but communication in a common language is not possible, attempts shall be made to convey instructions, acknowledgement of instructions and essential information by using the phrases and pronunciations in Table A2-1 and transmitting each phrase twice: (Refer to attached figure)

  • Phrases for use by INTERCEPTED aircraft: "AM LOST" = "Position unknown".

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