As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM - ENGINE #1 FIRE LOOP B FAULT. FOUND #1 ENG PYLON FIRE DETECTOR LOOP B INSULATION CHECK FAILED. REPLACED LOOP B PYLON FIRE DETECTOR PER AMM 26-12-16-400-803. REINSTALLED PYLON FIRE-DETECTOR RAMP ASSY PER AMM 26-12-16-400-802. OPS CHK GOOD.