As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING REGULAR OIL CHANGE ABNORMAL AMOUNTS OF FERROUS METAL NOTED IN OIL FILTER INSPECTION. CYLINDERS NR 4 & 6 REMOVED FOR INSPECTION & DISCOVERED GALLING DAMAGE TO CYLINDER NR 6 EXHAUST LOBE & CAM FOLLOWER. ENGINE REMOVED FOR REPAIR.