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AI.X.B.S4dFAA-S-ACS-25 · Nov 2023Skills

d. Verbally acknowledging stall warning indications, then;

ACS element text (the applicant demonstrates understanding of)

Clean configuration demonstration: d. Verbally acknowledging stall warning indications, then;

Bottom line

A stall is the result of exceeding the critical angle of attack, not of insufficient airspeed. It is possible to stall the wing at any airspeed, at any flight attitude, and at any power setting. Symptoms of an impending stall include a stall warning light or horn, airframe or elevator buffet, or sudden loss of control effectiveness.

FAA references

  1. AFH ch. 5, Angle of Attack (p. 5-9) — FAA-H-8083-3C
  2. AFH ch. 13 (p. 13-26) — FAA-H-8083-3C
  3. AFH ch. 13 (p. 13-2) — FAA-H-8083-3C
  4. AFH ch. 5, Performing the Slow Flight Maneuver (p. 5-11) — FAA-H-8083-3C
  5. PHAK ch. 5 (p. 5-3) — FAA-H-8083-25C (2023)
  6. AFH ch. 13 (p. 13-18) — FAA-H-8083-3C
  7. PHAK ch. 11 (p. 11-11) — FAA-H-8083-25C (2023)
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