As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM - BTB - L OIL FILTER DISPLAYED ON STATUS PAGE- AFTER START RETURNED TO GATE. C/W FIM 79-35-00 FIG 103, NO CONTAMINATION OF METAL PARTICLES ON CHIP DETECTORS OR FILTER, REMOVED & REPLACED OIL FILTER PER AMM 79-21-05-024-001-N00. 79-21-05-924-014-NOO. TEST NR 3 C/W MESSAGE DID NOT RETURN. LEAK CHECK OK. COWLING CLOSED AND SECURED.