Aviation English
Aircraft Systems

What is master caution system?

master caution system A central alerting system that warns the flight crew of abnormal but non-critical system status via lights and aural tones.

Source: ICAO Doc 9432, FAA PCG

How is “master caution system” Used in Practice?

Master caution system illuminated, crew reviewing advisory messages for non-critical issues.

Certification Exam Relevance

ICAO Level 4ICAO Level 5ICAO Level 6EASA FCL.055

Who Needs to Know This Term?

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

Related Aviation English Terms

cabin intercommunication systemelectronic centralised aircraft monitorengine-indication and crew-alerting systemflight-warning computer

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Frequently Asked Questions

What is master caution system?

A central alerting system that warns the flight crew of abnormal but non-critical system status via lights and aural tones.

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