AI.II.P.R1FAA-S-ACS-25 · Nov 2023Risk management

Exceeding the critical angle of attack.

ACS element text (the applicant demonstrates understanding of)

Exceeding the critical angle of attack.

Bottom line

The critical angle of attack is the angle of attack at which a wing stalls regardless of airspeed, flight attitude, or weight. The direct cause of every stall is an excessive angle of attack; the stall does not occur until the AOA becomes excessive. Low speed is not necessary to produce a stall; the wing can be brought to an excessive AOA at any speed.

FAA references

  1. AFH ch. 5 (p. 5-9) — FAA-H-8083-3C
  2. AFH Glossary (p. G-5) — FAA-H-8083-3C
  3. AFH ch. 1 (pp. 1-13–1-14) — FAA-H-8083-3C
  4. PHAK Glossary (p. G-9) — FAA-H-8083-25C (2023)
  5. FAA-P-8740-66, Flying Light Twins Safely — FAA-P-8740-66
  6. AFH ch. 13 (p. 13-23) — FAA-H-8083-3C
  7. AFH ch. 13 (p. 13-28) — FAA-H-8083-3C
  8. AFH ch. 18 (p. 18-9) — FAA-H-8083-3C
Members lesson

Build understanding you can use

Unlock the full lesson and continue studying this element.

  • Full teaching sections: Hazard; How it shows up; Decision rules; Mitigations; The hazard
  • Check your understanding with answers you can reveal
View membership options