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Aircraft systems and instrumentsQuestion 592 of 934

An engine has a constant-speed propeller. The pilot wants to increase power. In what order should the pilot change the settings?

  1. Increase manifold pressure first, then rpm
  2. Increase rpm first, then manifold pressure
  3. Increase rpm and manifold pressure at the same time
  4. Change both at the same time with no order
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Correct answer: Increase rpm first, then manifold pressure

When power settings are increased, the order is the reverse of the order for decreases.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 7: Aircraft Systems — Propeller — Adjustable-Pitch Propeller, page 167

Practice aircraft systems and instruments

Questions last reviewed: 18 October 2026