SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/sport-squawk-7700

Which transponder code is the general emergency code?

7700.

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  1. 7700 ✔
  2. 7600
  3. 1200

Why: Code 7700 is the emergency code, and it stands out on controllers' radar screens. 7600 and 1200 are different codes with different meanings.

Huh, didn't know that: Code 7500 will never be assigned by ATC without prior notification from the pilot.

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A Cessna 172 pilot called in as 'Triple Seven' to sound like a jet, and the tower asked for his full call sign.
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References

Answer: 7700. Code 7700 is the emergency code, and it stands out on controllers' radar screens. 7600 and 1200 are different codes with different meanings.

  1. FAA AIM 6-3-2 Obtaining Emergency Assistance www.faa.gov/air_traffic/publications/atpubs/aim_html/chap6_section_3.html
    squawk Mode A/3, Code 7700/Emergency and Mode C.
    Checked 2026-10-10.
  2. FAA AIM 6-3-4 Special Emergency www.faa.gov/air_traffic/publications/atpubs/aim_html/chap6_section_3.html
    Code 7500 will never be assigned by ATC without prior notification from the pilot.
    Checked 2026-10-10.

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