Aviation English
Aircraft Systems

What is power transfer unit?

power transfer unit A hydraulic unit that enables power transfer between two separate hydraulic systems without mixing their fluids.

Source: ICAO Doc 9432, FAA PCG

How is “power transfer unit” Used in Practice?

Power Transfer Unit operating to balance hydraulic pressure between systems after engine shutdown.

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 pumpflight-control hydraulic circuitblue hydraulic systemgreen hydraulic system

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Frequently Asked Questions

What is power transfer unit?

A hydraulic unit that enables power transfer between two separate hydraulic systems without mixing their fluids.

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