As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING SCHEDULED INSPECTION, MODERATE AMOUNT OF METAL WAS FOUND IN THE OIL FILTER. NR 2 AND NR 4 CYLINDERS WERE REMOVED FOR INVESTIGATION AND IT WAS OBSERVED NR 1 NR 2 CYLINDERS INTAKE CAMSHAFT LOBES WERE ABNORMALLY WORN AND THE CAM FOLLOWERS WERE BADLY SPALLED. THE ENGINE WAS REMOVED FOR REPAIR.