Aircraft systems and instrumentsQuestion 562 of 934

On which gyroscopic principle does the heading indicator depend?

  1. Rigidity in space
  2. Magnetic induction
  3. Eddy current damping
  4. Pitot pressure
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Correct answer: Rigidity in space

The rotor turns in a vertical plane. A compass card is fixed to it.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 8: Flight Instruments — Gyroscopic Flight Instruments — Heading Indicator, page 222

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Questions last reviewed: 18 October 2026