As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE PILOT REPORTED THE LEFT PROPELLER STUCK AT 2500 RPMS AT CRUISE FLIGHT, AND WAS UNABLE TO ADJUST. MAINTENANCE INSPECTED AND FOUND AND ALL COMPONENTS TO BE SECURED AND IN GOOD CONDITION. REMOVED THE LEFT ENGINE PROPELLER GOVERNOR AS A PRECAUTION. PREFORMED LEFT ENGINE RUN-UP, WITH NO FURTHER DEFECTS NOTED.