As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, AT AN ALTITUDE OF 10,000 FEET, THE PILOT NOTICED A REDUCTION IN MANIFOLD PRESSURE AND POWER FOR THE RIGHT ENGINE. THE RIGHT PROPELLER STARTED TO FEATHER. THE PILOT SHUT DOWN THE RIGHT ENGINE AND LANDED AIRCRAFT WITHOUT FURTHER INCIDENT. POST FLIGHT INSPECTION FOUND THE RIGHT PROPELLER GOVERNOR HAD FAILED INTERNALLY.