Aircraft systems and instrumentsQuestion 574 of 934

A pilot turns toward south at about 30 degrees latitude. When should the pilot stop the turn?

  1. 30 degrees after passing the desired heading
  2. 30 degrees before reaching the desired heading
  3. 15 degrees before the desired heading
  4. 15 degrees after passing the desired heading
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Correct answer: 30 degrees after passing the desired heading

In southerly turns, the compass lags. The pilot allows the card to pass the desired heading.

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

Practice aircraft systems and instruments

Questions last reviewed: 18 October 2026