Aviation English
MEL and CDL MEL and CDL

What is Crew seat inoperative?

Crew seat inoperative Flight-deck seat fails to lock, adjust, or retract, potentially compromising crew safety and requiring MEL evaluation.

Source: ICAO Doc 9432, FAA PCG

How is “Crew seat inoperative” Used in Practice?

Ground, DELTA 71, captain seat inoperative, cannot lock; request maintenance.

Certification Exam Relevance

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

Who Needs to Know This Term?

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

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Frequently Asked Questions

What is Crew seat inoperative?

Flight-deck seat fails to lock, adjust, or retract, potentially compromising crew safety and requiring MEL evaluation.

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