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The controller instructs you to "STOP SQUAWK CHARLIE, WRONG INDICATION". This means that the controller…

  • A

    is informing you that he/she can only determine your bearing within 10 degrees.

  • B

    wants you to turn off the altitude reporting function on your transponder.

  • C

    wants you to switch off your transponder completely.

  • D

    has an incorrect position indication for your aircraft on his/her primary radar.

Note: ATC do NOT want you to switch off the transponder, but just to turn off the Mode C function, as your aircraft is feeding incorrect height information to the radar display.

The instruction to deselect the altitude reporting function on your transponder.:

  • "Stop squawk charlie"
  • For example: “G-ABCD stop squawk charlie”
PhraseologyMeaning
Squawk "1234"Set the transponder code "1234"
Reset squawk "1234"Reset the previously issued code "1234"
Squawk IDENTTurn on the function IDENT
Squawk standby (STBY)Operate your transponder in the standby mode
Confirm squawkConfirm your squawk, read your squawk
Stop squawk CharlieTurn off the transponder MODE
Squawk Alpha/Charlie/SierraChange the transponder mode to Alpha/Charlie/sierra
Squawk VFRSquawk 7000 in most European countries
Squawk 1200 in North America
Squawk MaydaySet the emergency code 7700 on your transponder

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