Aviation English
Aircraft Systems

What is ram-air turbine?

ram-air turbine A small turbine deployed in flight to provide emergency hydraulic or electrical power using airflow.

Source: ICAO Doc 9432, FAA PCG

How is “ram-air turbine” Used in Practice?

Ram-air turbine deployed due to electrical failure, providing emergency hydraulic power and flight control support.

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

Hydraulic System FailureHydraulic Pressure LossBattery-Only Powerflight-control hydraulic circuit

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Frequently Asked Questions

What is ram-air turbine?

A small turbine deployed in flight to provide emergency hydraulic or electrical power using airflow.

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