Aviation English
Emergencies

What is Hydraulic System Failure?

Hydraulic System Failure A malfunction in the aircraft's hydraulic system, potentially affecting control surfaces, landing gear, or brakes.

Source: ICAO Doc 9432, FAA PCG

How is “Hydraulic System Failure” Used in Practice?

Mayday, mayday, we have a hydraulic system failure and require immediate return.

Certification Exam Relevance

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

Who Needs to Know This Term?

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

Related Aviation English Terms

Landing Gear MalfunctionDouble Engine FailureBattery-Only PowerDual Hydraulic System Loss

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Frequently Asked Questions

What is Hydraulic System Failure?

A malfunction in the aircraft's hydraulic system, potentially affecting control surfaces, landing gear, or brakes.

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