Tradewind Aviation Pilatus PC-12 NG Initial Check Practice Test

The overspeed governor in the Pilatus PC-12 NG is designed to prevent excessive engine RPM by regulating the fuel flow to the engine when certain RPM thresholds are reached. The correct RPM that the overspeed governor maintains is set at 1802 RPM. This RPM is above the normal operating range but below the critical level that could lead to engine damage or failure.

When the RPM approaches this limit, the governor automatically adjusts the fuel supply to maintain the engine's performance within safe operational parameters. This safeguard is crucial for ensuring the overall reliability and safety of the aircraft engine during flight operations.