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Aircraft systems and instrumentsQuestion 588 of 934

An airplane has a constant-speed propeller. The pilot sets the rpm in cruise, and then the airspeed increases. What does the governor do?

  1. It decreases the propeller blade angle
  2. It increases the propeller blade angle
  3. It decreases the manifold pressure
  4. It stops the propeller
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Correct answer: It increases the propeller blade angle

An increase in airspeed or a decrease in propeller load makes the blade angle increase to keep the selected rpm.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 7: Aircraft Systems — Propeller — Adjustable-Pitch Propeller, page 166

Practice aircraft systems and instruments

Questions last reviewed: 18 October 2026