As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS- ENG 1 FIRE LOOP B FAULT. AVIONICS FOUND ENG 1 PYLON FIRE DETECTOR LOOP B BAD. REMOVED AND REPLACED ENG 1 PYLON FIRE DETECTOR RAMP ASSY PER AMM 26-12-16. REPLACED ENG 1 LOOP B PYLON FIRE DETECTOR REF 26-12-16. REPLACED 45VC-A HARNESS ENG REF AMM 71-51-75. OPS TEST GOOD. BITE GOOD OK FOR SVC.