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Do You Know Ice?

Februarys Cowboy and Cowards sparked some passionate responses about known icing and my assertion that known icing is observed icing. To better understand known icing, we need to look at the concept from definitional, legal, and safety perspectives.

Gemini Sparkle

Key Takeaways:

  • "Known icing" is primarily defined as observed ice on an aircraft (visually or via sensors) or reported by others (PIREPs), distinguishing it from mere forecast or potential icing.
  • Legally, violations often arise not from flying into forecast icing, but from a pilot's failure to take appropriate action or implement an exit strategy once ice is actually observed or reported during flight.
  • Prudent pilots are expected to conduct thorough pre-flight planning for potential icing, including having alternate courses of action ready, to implement immediately if forecast conditions become observed.
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Adam Carr

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