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Aircraft systems and instrumentsQuestion 575 of 934

An airplane accelerates on an easterly or westerly heading. What does the magnetic compass show?

  1. A turn toward south
  2. No change
  3. A turn toward east
  4. A turn toward north
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Correct answer: A turn toward north

Deceleration shows a turn toward south. The mnemonic is ANDS (Acceleration-North/Deceleration-South).

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 8: Flight Instruments — Compass Systems — Acceleration Error, page 228

Practice aircraft systems and instruments

Questions last reviewed: 18 October 2026