Aviation English
Aircraft Systems

What is mach-trim system?

mach-trim system A system that compensates for Mach tuck by automatically adjusting stabilizer trim at high subsonic speeds.

Source: ICAO Doc 9432, FAA PCG

How is “mach-trim system” Used in Practice?

Mach-trim system engaged at cruise, compensating for Mach effects on control surfaces.

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

stabilizer trimfly-by-wireauto-brake systemflight-control hydraulic circuit

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Frequently Asked Questions

What is mach-trim system?

A system that compensates for Mach tuck by automatically adjusting stabilizer trim at high subsonic speeds.

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