Aviation English
Aircraft Systems

What is fly-by-wire?

fly-by-wire An electronic flight control system where pilot inputs are transmitted as electrical signals to computers, which command the flight control surfaces.

Source: ICAO Doc 9432, FAA PCG

How is “fly-by-wire” Used in Practice?

Fly-by-wire system reconfigured due to flight control computer fault, switching to alternate control law.

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 fly-by-wire?

An electronic flight control system where pilot inputs are transmitted as electrical signals to computers, which command the flight control surfaces.

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