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AI.X.F.K2FAA-S-ACS-25 · Nov 2023Knowledge

Flight situations where unintentional cross-controlled stalls may occur.

ACS element text (the applicant demonstrates understanding of)

Flight situations where unintentional cross-controlled stalls may occur.

Bottom line

The real danger is inadvertent stalls induced by distractions during routine flight situations. Most stall/spin accidents occurred when the pilot's attention was diverted from the primary task of flying the aircraft.

Key numbers

Key numbers for Flight situations where unintentional cross-controlled stalls may occur.
NumberWhat it means
60% of stall/spin accidents occurred during takeoff and landingTakeoff/landing
20% of stall/spin accidents were preceded by engine failureEngine failure
approximately 16° to 20° depending on the aircraft's designCritical AOA

FAA references

  1. AIH ch. 9 (pp. 9-9–9-10) — FAA-H-8083-9B
  2. PHAK ch. 5 (p. 5-25) — FAA-H-8083-25C (2023)
  3. AFH ch. 9 (p. 9-12) — FAA-H-8083-3C
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