AI.X.I.K9FAA-S-ACS-25 · Nov 2023Knowledge

Control procedure to maintain a stabilized spin.

ACS element text (the applicant demonstrates understanding of)

Control procedure to maintain a stabilized spin.

Bottom line

A stabilized spin is not different from a stall in any element other than rotation and the same load factor considerations apply to spin recovery as apply to stall recovery. If a spin is entered, most manufacturers recommend immediately retarding both throttles to idle, applying full rudder opposite the direction of rotation, and applying full forward elevator/stabilator pressure (with ailerons neutral).

Key numbers

Key numbers for Control procedure to maintain a stabilized spin.
NumberWhat it means
slightly above 1 G during a spin, varies with each aircraft's spin characteristicsSpin load factor
usually within 2 knots of the unaccelerated stalling speedsSpin airspeed
about 2.5 Gs in a proper spin recoveryRecovery load factor

FAA references

  1. PHAK ch. 5 (p. 5-36) — FAA-H-8083-25C (2023)
  2. AFH ch. 13 (p. 13-18) — FAA-H-8083-3C
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