As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AT INSPECTION A SMALL AMOUNT OF ALUMINIUM WAS FOUND IN THE OIL FILTER. CYLINDERS WERE REMOVED FROM THE ENGINE TO INVESTIGATE THE SOURCE OF THE FILTER CONTAMINATION. IT WAS FOUND THAT THE NR 2 MAIN BEARING HAD SHIFTED FORWARD AND WAS LOOSE CAUSING WEAR IN THE CRANKCASE NR 2 MAIN BEARING SUPPORT.