As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) ENGINE TURBINE OIL PRESSURE FITTING PN AN833-4J SEPARATED FROM GEARBOX COVER PN 6898569 ALLOWING ENGINE OIL TO BE PUMPED OVERBOARD. SUSPECT CAUSED BY B NUT VIBRATING LOOSE ALLOWING THE FITTING TO FRET IN THE COVER. REDUCED OIL FLOW (AND COOLING) TO THE TURBINE DAMAGED THE TURBINE BEARINGS. BEARING DEBRIS COLLECTED ON THE FORWARD CHIP PLUG.