As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#33, BOS-CDG. (ETOPS)'ENG 2 FIRE LOOP A FAULT ECAM APPEARED SEVERAL TIMES INTERMITTENTLY THEN REMAINED ON. ( ENGINE FIRE DETECTION SYSTEMS 1) LOOP A ); REMOVED AND REPLACED ENG #2 AGB CORE LOOP A (4002WD1) IAW AMM 26-12-17. OPS CHECK GOOD, NO FAULTS NOTED. THIS CLEARS THIS MDDR PLACARD REMOVED MX-4 UPDATED. MCC NOTIFIED.