AA.I.B.S4FAA-S-ACS-11A · Nov 2023Skills

Explain the adverse effects of airframe icing during all phases of flight. Describe any...

ACS element text (the applicant demonstrates understanding of)

Explain the adverse effects of airframe icing during all phases of flight. Describe any operating limitations for flight in icing conditions. If equipped, describe the procedures for deicing and anti-icing system use and their effects on performance.

Bottom line

The applicant is able to identify, assess, and mitigate risk associated with: Explain the adverse effects of airframe icing during all phases of flight. Describe any operating limitations for flight in icing conditions. If equipped, describe the procedures for deicing and anti-icing system use and their effects on performance.

FAA references

  1. 14 CFR 91.527 (Operating in icing conditions.) — eCFR current as of 2026-03-05
  2. AC 120-58 — AC 120-58
  3. AC 20-117, paras. 4f, 4g — AC No: 20-117
  4. AC 61-107, para. 2-12 — AC No: 61-107B
  5. AC 91-74, para. 7-1, 7-4 — AC No: 91-74A
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