As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FLIGHT, THE CREW OBSERVED THE OIL PRESSURE DECREASING ON 1 ENGINE. POWER WAS RETARDED TO IDLE AND THE OIL PRESSURE REMAINED IN THE GREEN BAND. AN UNEVENTFUL LANDING. LANDING WAS MADE ON NEAREST ISLAND. THE PROBLEM WAS TRACED BACK TO A FAULTY OIL SEAL WHICH WILL BE REPLACED BEFORE THE ACFT IS RETURNED TO SERVICE.