PA.VII.D.K2FAA-S-ACS-6C · Nov 2023Knowledge
What causes a spin and how to identify the entry, incipient, and developed phases of a ...
What causes a spin and how to identify the entry, incipient, and developed phases of a spin.
Bottom line
There are four phases of a spin: entry, incipient, developed, and recovery. At the stall, the presence or introduction of a yawing moment can initiate spin entry.
Key numbers
| Number | What it means |
|---|---|
| 1,500 feet AGL minimum for recovery completion | Spin start alt |
| approximately 1,000 feet | First turn loss |
| two to four turns for most airplanes | Incipient turns |
| prior to 360° of rotation | Recovery trigger |
FAA references
- AFH chs. 5, 13 (pp. 5-22, 5-23, 5-24, 5-25, 13-18) — FAA-H-8083-3C
- PHAK ch. 10 (p. 10-3) — FAA-H-8083-25C (2023)
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