As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 354, DUB-BOS. (ETOPS) ENG 1 FIRE LOOP B FAULT DISPLAYED ON UPPER ECAM FAULT CODE 26-12-05. (ENGINE FIRE DETECTION SYSTEMS LOOP B). R+R ENG 1 PYLON FIRE DETECTOR (4WD1) PER AMM 26-12-16-400-803-A. OPS CHECK GOOD. NO DEFECTS AT THIS TIME. THIS CLEARS MDDR 621062. PLACARD REMOVED. MX-4 UPDATED.