Safety
FAA clarifies ‘polished frost’ rule
The FAA issued a new Safety Alert for Operators (SAFO 06014) that seeks to clarify the conditions under which pilots can take off with frost adhering to ai

The FAA issued a new Safety Alert for Operators (SAFO 06014) that seeks to clarify the conditions under which pilots can take off with frost adhering to airframes. At the same time, the SAFO might complicate the pre-takeoff decision-making process because it reminds pilots that takeoff with frost adhering to lifting surfaces and flight controls is legal.

FAA regulations (Part 91.527 and 135.227) permit takeoff with frost on the wings or stabilizing or control surfaces “if the frost has been polished to make it smooth.” While this seems to be a clear statement, the SAFO recommends that pilots do not take off with polished frost unless they have complied with an aircraft manufacturer’s specific procedure for preparing a frost-covered aircraft for flight.

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