List of Transponder Codes

Transponder fails

With most aircraft fitted with a transponder box, here’s a list of useful ‘squawk’ transponder codes for use in certain situations.


1200 – Standard VFR code used in North America.

7000 – Standard VFR code use in Europe.

0021 – VFR code for use in Germany below 5000′.

0022 – VFR code for use in Germany above 5000′.

7500 – Hijack. Used when your aircraft is under a hijack situation.

7600 – Radio Failure. When you’re not able to transmit and/or receive communications by radio.

7700 – Emergency. Your aircraft is experiencing an emergency situation.



Matt Falcus is a private pilot and aviation writer. He has been flying since 2006, taking the opportunity whenever the British weather allows to explore the local area and other airfields. He is author of a number of aviation books.

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