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What is Anti-ice valve failure?

Anti-ice valve failure Malfunction of wing or engine anti-ice valve preventing hot-air flow, compromising ice protection and requiring flight profile adjustment.

Source: ICAO Doc 9432, FAA PCG

How is “Anti-ice valve failure” Used in Practice?

Approach, NOVA six one, anti-ice valve failure indicated; unable to activate wing anti-ice, request lower altitude.

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 Anti-ice valve failure?

Malfunction of wing or engine anti-ice valve preventing hot-air flow, compromising ice protection and requiring flight profile adjustment.

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