What was found
VISIBLE METAL PIECES WERE FOUND IN THE ENGINE OIL AND OIL FILTER MEDIA DURING SCHEDULED MAINTENANCE. THE ENGINE WAS DISASSEMBLED AND A VISUAL INSPECTION REVEALED THE NR 5 PISTON PIN HAD FAILED. SPECIFICALLY, THE PISTON PIN PLUG APPEARED TO BE THE SOURCE OF THE METAL. THE CRANKCASE, CRANKSHAFT, CAMSHAFT AND CONNECTING RODS WERE ALL SENT TO VARIOUS CERTIFIED REPAIR STATIONS, (CRS), FOR FURTHER INSPECTION AND RE-CERTIFICATION. THE CRS REPORTS REVEALED NO DISCREPANCIES WITH ANY OF THESE COMPONENTS. THE CAUSE FOR THIS FAILURE IS UNDETERMINED.