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AerodynamicsQuestion 425 of 934

How does the PHAK define angle of attack (AOA)?

  1. The angle between the chord line and the horizon
  2. The acute angle between the chord line and the relative wind
  3. The angle between the wing and the flight path of the previous second
  4. The angle between the longitudinal axis and the horizon
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Correct answer: The acute angle between the chord line and the relative wind

AOA is the acute angle between the chord line of the airfoil and the direction of the relative wind.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 5: Aerodynamics of Flight — Forces Acting on the Aircraft, page 99

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Questions last reviewed: 18 October 2026