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Aeromedical factorsQuestion 726 of 934

During flight in VMC, which source of orientation usually prevails over false body sensations?

  1. The inner ear
  2. The skin and muscles
  3. The eyes
  4. The sense of hearing
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Correct answer: The eyes

In VMC the eyes are the major orientation source. In IMC false sensations can cause disorientation.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 17: Aeromedical Factors — Spatial Disorientation and Illusions, page 428

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Questions last reviewed: 18 October 2026