CPL Aircraft General Knowledge · Practice

A constant-speed propeller installation includes an overspeed governor as well as the primary governor. What is the purpose of the overspeed governor?

• A.The overspeed governor limits engine RPM in cruise to improve fuel economy
• B.The overspeed governor controls propeller RPM during reverse pitch operations
• C.If the primary governor fails and RPM exceeds the maximum, the overspeed governor gives a backup limit
• D.The overspeed governor is required only on turboprop aircraft; piston aircraft do not use them