As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE WAS RECEIVED TO REPAIR FOR LOW OIL PRESSURE AND METAL IN OIL. UPON DISASSEMBLY, FOUND THE IDLER GEAR IN THE PRESSURE SIDE OF THE PUMP HAD WORN AWAY APPROXIMATELY .3750 INCH OF THE PRESSURE PUMP BODY AND THE IDLER GEAR SHAFT CAUSING STEADILY DECREASING OIL PRESSURE AND METAL IN OIL.