SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/comm-steep-spiral-max-bank

What is the maximum bank allowed at the steepest point of a steep spiral?

60 degrees, while keeping a constant radius around a point.

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  1. 60 degrees ✔
  2. 45 degrees
  3. 75 degrees

Why: A steep spiral is a gliding turn around a ground point with constant radius. You steepen the bank when the wind is behind you, but the ACS says no more than 60 degrees.

Huh, didn't know that: You must finish no lower than 1,500 feet AGL, after at least three 360 degree turns.

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References

Answer: 60 degrees. A steep spiral is a gliding turn around a ground point with constant radius. You steepen the bank when the wind is behind you, but the ACS says no more than 60 degrees.

  1. Commercial Pilot Airplane ACS (FAA-S-ACS-7B) www.faa.gov/training_testing/testing/acs/commercial_airplane_acs_7.pdf
    Establish and maintain a steep spiral, not to exceed 60° angle of bank
    Checked 2026-10-10.
  2. Airplane Flying Handbook ch 10, Performance Maneuvers (FAA-H-8083-3C) www.faa.gov/sites/faa.gov/files/regulations_policies/handbooks_manuals/aviation/airplane_handbook/11_afh_ch10.pdf
    The maneuver consists of the completion of at least three 360° turns
    Checked 2026-10-10.

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