Aviation English
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What is Configuration Deviation?

Configuration Deviation A formally approved variation from the aircraft’s standard configuration as specified in the Configuration Deviation List (CDL), which may permit flight with certain external parts missing or inoperative.

Source: ICAO Doc 9432, FAA PCG

How is “Configuration Deviation” Used in Practice?

Aircraft is dispatched with a configuration deviation approved by the CDL, such as a missing fairing.

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 Configuration Deviation?

A formally approved variation from the aircraft’s standard configuration as specified in the Configuration Deviation List (CDL), which may permit flight with certain external parts missing or inoperative.

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