Aircraft systems and instrumentsQuestion 572 of 934

A pilot's magnetic course is 190° and the compass correction card shows a deviation of -2° for that heading. What is the compass course?

  1. 192°
  2. 188°
  3. 190°
  4. 186°
Show answer

Correct answer: 188°

Magnetic course plus or minus deviation equals compass course. Here 190° minus 2° is 188°.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 8: Flight Instruments — Compass Systems — Magnetic Compass Induced Errors, page 227

Practice aircraft systems and instruments

Questions last reviewed: 18 October 2026