As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING ROUTINE INSPECTION IT WAS NOTED THAT THE OIL TRANSFER LINE ON THE REAR OF THE OIL COOLER WAS LEAKING UNDER STATIC CONDITIONS. WHEN THE UNIT WAS DRAINED IT WAS ALSO NOTED THAT THE DRAIN PLUG WAS THE INCORRECT TYPE. THE PLUG WAS A BOLT RATHER THAN AN AN814 PLUG.