As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) OIL FILTER INSPECTION FOUND METAL CONTAMINATION. ENGINE WAS SENT FOR INVESTIGATION AND REPAIR. DISASSEMBLY FOUND WEAR/SPALLING ON THE CAMSHAFT LOBES AND THE CAM FOLLOWERS FACE. THE CAMSHAFT AND FOLLOWERS WERE REPLACED. THE ENGINE WAS CLEANED, REASSEMBLED AND RETURNED TO SERVICE.