As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NRT - FLT 0129 - EN ROUTE SJC/NRT ON FINAL, THE NR 3 FIRE WARNING WAS INTERMITTENT. LANDED NRT WITHOUT INCIDENT. REPAIRED TEMPERATURE END ON THE B-LOOP. DURING TAXI OUT FOR FLT 0026, THE NR 3 ENGINE FIRE WARNING VISUAL AND AURAL ALERTS ACTIVATED. REPLACED FIRE LOOP HARNESS AT LOWER GEARBOX DETECTOR UNIT. SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)