Aviation English
Fueling Deicing

What is Defuel?

Defuel The process of removing fuel from an aircraft’s tanks, usually for maintenance, balancing, or to comply with regulatory requirements such as weight limits.

Source: ICAO Doc 9432, FAA PCG

How is “Defuel” Used in Practice?

Ramp, request defuel on stand 24 due to excess onboard fuel for current sector limits.

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 Defuel?

The process of removing fuel from an aircraft’s tanks, usually for maintenance, balancing, or to comply with regulatory requirements such as weight limits.

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