What is Transponder Code 7700?
Transponder Code 7700 The ATC transponder code universally set to indicate a general emergency, alerting controllers to an onboard emergency situation.
Source: ICAO Doc 9432, FAA PCG
How is “Transponder Code 7700” Used in Practice?
The crew set the transponder to code 7700 to declare an emergency and alert ATC.
Certification Exam Relevance
Who Needs to Know This Term?
- Pilots
- Air Traffic Controllers
- Cabin Crew
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What is Transponder Code 7700?
The ATC transponder code universally set to indicate a general emergency, alerting controllers to an onboard emergency situation.
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