As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
METAL CONTAMINATION IN OIL SCREEN DURING INSPECTION. REMOVED ALL CYLINDERS AND RODS AND FOUND 2 ROD BEARINGS FLAKING METAL OFF. THESE 2 BEARINGS AND ONE OTHER WERE NOT THE NEWEST PART NUMBER AS CURRENTLY SUPPLIED BY SUPERIOR. THEY WERE REPLACED AND ENGINE RETURNED TO SERVICE.