As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT REPORTED LOSS OF ENGINE MAIN OIL PRESSURE IN CRUISE FROM PORT MORESBY TO MT HAGEN. LOSS OF OIL PRESSURE WAS MATCHED WITH LOW OIL PRESSURE LIGHT. ENGINE SHUTDOWN AND SECURED. UNEVENTFUL SINGLE ENGINE LANDING PERFORMED. TROUBLESHOOTING ONGOING.