What was found
(CAN) OIL LEAK AT OIL SUMP. RETORQUE OF SUMP BOLTS MADE LEAK WORSE. REMOVAL OF OIL SUMP REVEALED CRACK AT MOUNTING FLANGE. THE AIRCRAFT IS USED TO TOW GLIDERS OFF GRASS STRIP AND THIS NO DOUBT CONTRIBUTED TO THIS FAILURE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) OIL LEAK AT OIL SUMP. RETORQUE OF SUMP BOLTS MADE LEAK WORSE. REMOVAL OF OIL SUMP REVEALED CRACK AT MOUNTING FLANGE. THE AIRCRAFT IS USED TO TOW GLIDERS OFF GRASS STRIP AND THIS NO DOUBT CONTRIBUTED TO THIS FAILURE.