As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE MAINTENANCE, THE OIL SCREEN WAS FOUND TO HAVE METAL PARTICLES IN IT. THE ENGINE WAS 200 HOURS AWAY FROM TBO. THE ENGINE WAS TORN DOWN TO DETERMINE THE SOURCE OF METAL. DISCOVERED ONE OF THE MAIN BEARINGS TO THE CRANKSHAFT WAS FLAKING OFF. THE DELAMINATION OF METAL ON THE BEARING FACE WAS TO A DEPTH OF APPROXIMATELY .015 INCH - .025 INCH.