AI.X.E.R5FAA-S-ACS-25 · Nov 2023Risk management

Secondary stalls, cross-control stalls, and spins.

ACS element text (the applicant demonstrates understanding of)

Secondary stalls, cross-control stalls, and spins.

Bottom line

Abrupt pull ups at high diving speeds may produce recurrent or secondary stalls by increasing the angle of attack to that of stalling. In a power-off landing approach, excessive rudder pressure with opposite aileron and elevator back pressure can develop into a cross-control condition. A stall in a fully developed cross-control condition during a power-off landing approach almost certainly results in a rapid and unrecoverable spin.

FAA references

  1. AFH ch. 3 (p. 3-24) — FAA-H-8083-3C
  2. AFH ch. 13 (pp. 13-18–13-19) — FAA-H-8083-3C
  3. AIH ch. 9 (pp. 9-9–9-10) — FAA-H-8083-9B
  4. AFH ch. 5, Stall Recognition (p. 5-13) — FAA-H-8083-3C
  5. AFH ch. 1 (p. 1-13) — FAA-H-8083-3C
  6. AFH ch. 13 (pp. 13-19–13-20) — FAA-H-8083-3C
  7. AFH ch. 13 (p. 13-20) — FAA-H-8083-3C
  8. PHAK ch. 5 (p. 5-36) — FAA-H-8083-25C (2023)
  9. AFH ch. 5, Angle of Attack (p. 5-9) — FAA-H-8083-3C
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