What was found
(CAN) IN CRUISE FLIGHT, ENGINE FAILED DUE TO LOSS OF OIL. INVESTIGATION REVEALED SECTIONS OF THE OVERSPEED GOVERNOR GASKET HAD SEPERATED FROM THE CORE AND MIGRATED OUTWARDS ALLOWING OIL TO LEAK FROM BETWEEN THE GOVERNOR BODY AND THE GASKET CENTER CORE. THE OVERSPEED GASKET IS OF 3 PARTS. A STAINLESS STEEL CORE SANDWICHED BETWEEN 2 PAPER OUTER SECTIONS. THE GASKET WAS SUPPLIED BY THE GOVERNOR O/H FACILITY AT TIME OF LAST O/H.