As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SCHEDULED OIL CHANGE, A LARGE QUANTITY OF FERROUS PARTICLES WERE FOUND IN OIL FILTER AND ON DRAIN PLUG. INVESTIGATION REVEALED BEARING FAILURE OF STARTER DRIVE ADAPTER. FORWARD PILOT BEARING WAS COMPLETELY GONE AND CASE BORE DAMAGED. AFT BEARING SUPPORTING COUNTERWEIGHT WAS WORN AND SLOPPY. COMPLETE ENGINE SENT FOR REPAIR.