As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENG 1 FIRE LOOP B FAULT. T/S PER WDM26-12-04 AND 71-51-05 AS WELL AS ASM 26-12-01. UNABLE TO DUPLICATE FAULT. AS PRECAUTIONARY, REPLACED PYLON LOOP PER AMM 26-12-16. REPLACED FDU 1 IAW AMM 26-12. REPLACED CORE LOOP IAW AMM 26-12. PERFORMED FDU 1 & FDU 2 BITE TEST - ALL OK REPLACED FAN (ZONE 2) LOOP IAW AMM 26-12. GROUND TEST GOOD. A/C GOOD FOR SVC; UNIT, FIRE DETE OFF 33-2612-9-0001 02067 ON 33-2612-9-0001 01914; SENSOR, ASSY FI OFF 43-2612-9-0002 01647 ON 43-2612-9-0002 02145.