What is deferral?
deferral A formal process allowing a non-essential inoperative item to be left unrepaired for a specified time under MEL/CDL limits.
Source: ICAO Doc 9432, FAA PCG
How is “deferral” Used in Practice?
Deferral has been approved for this MEL item, maintenance must be completed within allowed interval.
Certification Exam Relevance
Who Needs to Know This Term?
- Pilots
- Air Traffic Controllers
- Cabin Crew
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What is deferral?
A formal process allowing a non-essential inoperative item to be left unrepaired for a specified time under MEL/CDL limits.
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