IR.II.A.S1FAA-S-ACS-8C · Nov 2023Skills

Demonstrate familiarity with anti- or de-icing procedures or information published by t...

ACS element text (the applicant demonstrates understanding of)

Demonstrate familiarity with anti- or de-icing procedures or information published by the manufacturer specific to the aircraft used on the practical test.

Bottom line

Operation of aircraft anti-icing and deicing systems should be checked prior to encountering icing conditions. In the absence of AFM/POH guidance to the contrary, anti-icing equipment should be actuated prior to flight into known or suspected icing conditions.

FAA references

  1. 14 CFR 91.527 (Operating in icing conditions.) — eCFR current as of 2026-03-05
  2. PHAK ch. 7 (p. 7-41) — FAA-H-8083-25C (2023)
  3. IFH ch. 5 (p. 5-37) — FAA-H-8083-15B
  4. AC 91-74 Appendix 3 — AC No: 91-74A
  5. AFH ch. 13 (pp. 13-9–13-10) — FAA-H-8083-3C
  6. PHAK ch. 7 (p. 7-40) — FAA-H-8083-25C (2023)
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