SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/comm-va-what-it-protects

Flying at or below VA protects the airplane against which control input?

One full control movement, in one axis, in smooth air.

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  1. Several full inputs at the same time
  2. Any gust of any strength
  3. One full deflection of one control, once, in smooth air ✔

Why: VA means you can move a single control once to full deflection, in one axis, in smooth air without damage. It does not protect against several full inputs or combined inputs in more than one axis.

Huh, didn't know that: VA is the rough air speed: in severe turbulence, slow to VA or less to reduce stress on the structure.

The dad joke
Why is VA like a good friend? It only covers you for one big request at a time.
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References

Answer: One full deflection of one control, once, in smooth air. VA means you can move a single control once to full deflection, in one axis, in smooth air without damage. It does not protect against several full inputs or combined inputs in more than one axis.

  1. FAA Safety Briefing, May/June 2015 www.faasafety.gov/files/events/SO/SO15/2024/SO15133906/AircraftPerformance.pdf
    move a single flight con- trol, one time
    Checked 2026-10-11.
  2. FAA Safety Briefing, May/June 2015 www.faasafety.gov/files/events/SO/SO15/2024/SO15133906/AircraftPerformance.pdf
    full deflection, for one axis
    Checked 2026-10-11.
  3. PHAK ch 5, Aerodynamics of Flight (FAA-H-8083-25C) www.faa.gov/sites/faa.gov/files/07_phak_ch5_0.pdf
    it is wise to reduce the speed
    Checked 2026-10-11.

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