What was found
(CAN) OIL DRAIN PLUG FROM ENGINE O-RING WEARS OUT. METAL RUBBED AGAINST METAL UNTIL COLLAR WEARS OFF. THEN CENTER PIECE FELL OUT LEAVING A 1/2 INCH HOLE FOR THE OIL TO DRAIN. (IN FLIGHT). THIS DRAIN VARIES FROM ENGINE TO ENGINE TYPE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) OIL DRAIN PLUG FROM ENGINE O-RING WEARS OUT. METAL RUBBED AGAINST METAL UNTIL COLLAR WEARS OFF. THEN CENTER PIECE FELL OUT LEAVING A 1/2 INCH HOLE FOR THE OIL TO DRAIN. (IN FLIGHT). THIS DRAIN VARIES FROM ENGINE TO ENGINE TYPE.