Listening squawks

Codes and frequencies

NEW April 2019 squawk card to download: Listening Squawks (April_2019)


A listening squawk enables an air traffic controller to alert a pilot if their aircraft looks likely to infringe – but only if they are sharing the same radio frequency.

By selecting the listening squawk, you are indicating to the Air Traffic Control (ATC) unit that you are listening on its frequency and are contactable.

Check which listening squawks and their corresponding ATC radio frequencies you will need before you take your next flight.

  • Tune in to the radar controller’s radio frequency BEFORE selecting a listening squawk (otherwise you won’t be listening)
  • Turn on your transponder and select the listening squawk, using ALT (Mode C) if you have it
  • Tune in to the radio frequency without transmitting
  • Listen out for your callsign or position

Air traffic control will know that you are listening out and can call you on the frequency if you are getting too close to controlled airspace.

When you leave the area

  • Change the transponder code to 7000 (or your next required code), then
  • Retune your radio to the next required frequency.

Keep reading

Infringement updates

Squawk and LARS cards

Infringement avoidance

Learn more

Pre-flight planning

Learn more