As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#2220, LHR-JFK. (ETOPS) 'ENG 1 FIRE LOOP A FAULT ( ENGINE FIRE DETECTION SYSTEMS 1) LOOP A ); FOUND CLIP BROKEN ON RAIL ASSY AND HI-TEMP HARNESS WHTE (4181KS) CHAFED. REMOVED AND REPLACED RAIL ASSY AND HI-TEMP HARNESS IAW AMM 26-12-17. MX-4 UPDATED. PLACARD REMOVED. MCC NOTIFIED. MDDR CLEARD.'