Aviation English
Aircraft Systems

What is alternate landing-gear extension?

alternate landing-gear extension A backup method to deploy the landing gear using gravity, hydraulic, or manual means if the normal extension system fails.

Source: ICAO Doc 9432, FAA PCG

How is “alternate landing-gear extension” Used in Practice?

Alternate landing-gear extension in use due to hydraulic failure, reporting gear down and locked.

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 alternate landing-gear extension?

A backup method to deploy the landing gear using gravity, hydraulic, or manual means if the normal extension system fails.

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