As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MWH - FLT 2563 - LEFT OIL PRESSURE LIGHT CAME ON, OIL PRESSURE GAGE READ 0. PULLED STOP AND FEATHER AS ENGINE STARTED TO LOSE TORQUE. CREW LANDED WITH NO FURTHTER INCIDENT. OIL LEAK IN PROP GOVERNOR AREA. REPLACED LINE, CHECKED LINE POSITION FOR ALL LINES. GOURND RUNS AND TEST FLIGHT GOOD. (M)