PA.I.C.K3kFAA-S-ACS-6C · Nov 2023Knowledge

k. Frost

ACS element text (the applicant demonstrates understanding of)

Meteorology applicable to the departure, en route, alternate, and destination under visual flight rules (VFR) in Visual Meteorological Conditions (VMC), including expected climate and hazardous conditions such as: k. Frost

Bottom line

Frost contamination can seriously degrade lift even when it looks thin.

FAA references

  1. PHAK ch. 12, Weather Theory — FAA-H-8083-25C (2023)
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