As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PART HAD BEEN REPAIRED USING EPOXY TO STOP A LEAK. DURING NORMAL SERVICE, EPOXY FAILED CAUSING THE OIL COOLER TO LEAK AT POINT OF ORIGINAL REPAIR. SUBMITTER RECOMMENDED ELIMINATING USE OF EPOXY IN OIL COOLERS AS EPOXY FAILURE IS COMMON. (X)