As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS - FLT 1 DIVERETED TO (ITO) - L ENG OIL FILTER MSG. REMOVED MAIN OIL FILTER ELEMENT, VISUAL CHECK FILTER NO METAL NOTED. REPLACED MAIN OIL FILTER WITH NEW IAW AMM 79-21-05. REPLACED PRESSURE SWITCH, ACCOMPLISHED AUTO EVENT ERASE PROCEDURE. MSG CLEARED. ACCOMPLISH AMM 79-35-00-735-025-NOO SYS TEST - OIL FILTER BY PASS WARNING SYS TEST CHECK OK. NO EICAS MSG OR LIGHT. ACFT OK FOR SERVICE.