Aircraft systems and instrumentsQuestion 568 of 934

A pilot wants to fly a true course of 180° in an area with a variation of 10° west. What is the magnetic course?

  1. 170°
  2. 190°
  3. 180°
  4. 200°
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Correct answer: 190°

For west variation, the pilot adds the variation to the true course.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 8: Flight Instruments — Compass Systems — Magnetic Compass Induced Errors, page 226

Practice aircraft systems and instruments

Questions last reviewed: 18 October 2026