As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(V7AR) DURING CRUISE FLIGHT THE RT ENGINE WENT TO 2700 RPM THEN DROPPED TO 1100 RPM. THE PILOT DID NOT NOTICE ANY OTHER GAGE READINGS. THE ENGINE STOPPED AND THE PILOT WAS UNABLE TO RESTART. THE ACFT LANDED OK. THE ENGINE HAS NOT BEEN INSPECTED. ON TEARDOWN, FOUND THE CAMSHAFT DRIVE GEAR WITH MISSING TEETH. GEAR APPEARED TO BE BRITTLE. REMOVED AND REPLACE DRIVE GEAR.