Aviation English
Emergencies

What is In-Flight Ice Accretion?

In-Flight Ice Accretion The buildup of ice on aircraft surfaces during flight due to supercooled water droplets freezing on contact, which can impair performance or control.

Source: ICAO Doc 9432, FAA PCG

How is “In-Flight Ice Accretion” Used in Practice?

ATC, we are experiencing in-flight ice accretion and request descent below freezing level immediately.

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 In-Flight Ice Accretion?

The buildup of ice on aircraft surfaces during flight due to supercooled water droplets freezing on contact, which can impair performance or control.

Where can I learn this term for free?

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