What was found
(CAN) FLIGHT CREW REPORTED PROPELLER SPEED LIMITED TO 1800 RPM DURING CRUISE. MAINTENANCE FOUND THE OVERSPEED GOVERNOR TEST SOLENOID WAS ENGAGING INTERMITTENTLY WHICH CAUSED THE GOVERNOR TO LIMIT RPM.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) FLIGHT CREW REPORTED PROPELLER SPEED LIMITED TO 1800 RPM DURING CRUISE. MAINTENANCE FOUND THE OVERSPEED GOVERNOR TEST SOLENOID WAS ENGAGING INTERMITTENTLY WHICH CAUSED THE GOVERNOR TO LIMIT RPM.