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SESK: Stuff Everyone Should Know · sesk.info/comm-spin-four-phases

Which list gives the four phases of a spin in order?

Entry, incipient, developed, recovery.

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  1. Stall, incipient, developed, recovery
  2. Entry, autorotation, flat, recovery
  3. Entry, incipient, developed, recovery ✔

Why: A spin starts with an entry, then an incipient phase as it develops. In the developed phase the motion repeats and the spin is in equilibrium. Recovery ends the rotation.

Huh, didn't know that: Some training airplanes never reach the developed phase and can slide from the incipient phase into a spiral dive.

The dad joke
Why did the pilot love the incipient phase? It was the only part of the spin with a good start.
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References

Answer: Entry, incipient, developed, recovery. A spin starts with an entry, then an incipient phase as it develops. In the developed phase the motion repeats and the spin is in equilibrium. Recovery ends the rotation.

  1. Airplane Flying Handbook ch 5, Maintaining Aircraft Control (FAA-H-8083-3C) www.faa.gov/sites/faa.gov/files/regulations_policies/handbooks_manuals/aviation/airplane_handbook/06_afh_ch5.pdf
    There are four phases of a spin: entry, incipient, developed, and recovery.
    Checked 2026-10-10.
  2. Airplane Flying Handbook ch 5, Maintaining Aircraft Control (FAA-H-8083-3C) www.faa.gov/sites/faa.gov/files/regulations_policies/handbooks_manuals/aviation/airplane_handbook/06_afh_ch5.pdf
    aerodynamic forces and inertial forces are in balance
    Checked 2026-10-10.

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