As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CUSTOMER ADVISED THE MAIN OIL PRESSURE WAS FLUCTUATING 20 MIN INTO THE FLIGHT. THE OIL PRESSURE STARTED TO DROP TO 47 PSI THEN THE PILOT ELECTED TO SHUTDOWN AND SECURE THE ENGINE. THE TROUBLESHOOTING FOUND BOTH ENGINE OIL FILTERS WERE CLOGGED WITH BRONZE LOOKING MATERIAL. THE CUSTOMER WAS ADVISED TO REMOVE THE ENGINE FOR OIL CONTAMINATION.