As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#1388, LAX-BOS. (ETOPS) 'ENG 1 FIRE LOOP A FAULT ( ENGINE FIRE DETECTION SYSTEMS 1) LOOP A ); FOUND 4002WD1 CORE AGB LOOP A CHAFFED AGENTS GROUND. ADJUSTED GROUND REF TSM 26-12-00-810-912(852)-A. ER, GROUND VERIFICATION PASSED. MX-4 UPDATED AND PLACARD REMOVED. ETOPS VERIFICATION FLIGHT REQUIRED.'