As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING ROUTINE ENG INSPECTION THE OIL FILTER CAP WAS FOUND TO BE CONTACTING THE ENG MOUNT CAUSING WEAR ON THE CAP. THIS ENG HAD SERVICE BULLETIN 79-0012 OIL FILTER HOUSING ADAPTER INCORPORATED THAT ALLOWED THE CONTACT. THE FILTER CAP WAS REPLACED & THE ADAPTER WAS R & R WITH A PRE SB 79-0012 ADAPTER.