AA.V.C.K3FAA-S-ACS-11A · Nov 2023Knowledge

Factors and situations that can lead to a stall when configured for landing and actions...

ACS element text (the applicant demonstrates understanding of)

Factors and situations that can lead to a stall when configured for landing and actions that can be taken to prevent it.

Bottom line

A reduction of the angle of attack (AOA) is required to initiate recovery of all stall events. AOA must be reduced prior to controlling roll. During a power-off landing approach, excessive rudder pressure can lead to a fully developed cross-control condition, and a stall in that situation almost certainly results in a rapid and unrecoverable spin.

Key numbers

Key numbers for Factors and situations that can lead to a stall when configured for landing and actions...
NumberWhat it means
recovery no lower than 3,000 feet AGL for multiengine airplanes, or higher if recommended by the AFM/POHPractice alt
up to 20 degrees of bank for a power-off approach to stallBank limit
approximately 500 fpm stabilized descent to initiate a power-off approach to stallEntry descent

FAA references

  1. AC 120-109, para. 3-2 — AC No: 120-109A
  2. AFH ch. 3 (pp. 3-23–3-24) — FAA-H-8083-3C
  3. AFH ch. 13 (pp. 13-18–13-19) — FAA-H-8083-3C
  4. PHAK ch. 6 (p. 6-6) — FAA-H-8083-25C (2023)
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