Aviation English
Meteorology

What is Rime Icing?

Rime Icing The formation of rough, milky, opaque ice due to rapid freezing of supercooled water droplets on aircraft surfaces.

Source: ICAO Doc 9432, FAA PCG

How is “Rime Icing” Used in Practice?

Pilot reports moderate rime icing at flight level one-eight-zero.

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

Clear IcingDe-icingRime icede‑icing

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Frequently Asked Questions

What is Rime Icing?

The formation of rough, milky, opaque ice due to rapid freezing of supercooled water droplets on aircraft surfaces.

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