What was found
OPERATOR REPORTED THAT THE LEFT ENGINE WAS SHUT DOWN AND THE PROPELLER FEATHERED DUE TO ROUGH RUNNING ENGINE SHORTLY AFTER TAKEOFF. MECHANIC INSPECTED ENGINE AFTER LANDING AND DISCOVERED CRACKED RING GEAR IN GEAR REDUCTION UNIT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
OPERATOR REPORTED THAT THE LEFT ENGINE WAS SHUT DOWN AND THE PROPELLER FEATHERED DUE TO ROUGH RUNNING ENGINE SHORTLY AFTER TAKEOFF. MECHANIC INSPECTED ENGINE AFTER LANDING AND DISCOVERED CRACKED RING GEAR IN GEAR REDUCTION UNIT.