As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE OIL CHANGE METAL FOUND IN OIL FILTER. METAL FOUND TO BE BEARING MATERIAL COMING FROM CONNECTING ROD BEARING PREMATURE FAILURE. BEARING MATERIAL IS DELAMINATING. CONNECTING ROD BEARING MANUFACTURE DATES ARE (ML-KS 2-9A AND 3-99) MANUFACTURING DEFECT/PROBLEM KNOWN TO MFG. CRANKSHAFT GRIND REQUIRED TO CORRECT JOURNAL HEAT DEFECTS. (WPO1200303672)