What was found
NRT - FLT 0962 - THE NR 2 ENGINE B-LOOP FIRE WARNING LIGHT ILLUMINATED DURING CLIMB-OUT OF NRT. THE NR 2 ENGINE WAS SHUT DOWN, BOTH FIRE BOTTLES WERE DISCHARGED, AND THE AIRCRAFT WAS RETURNED TO NRT WHERE IT LANDED WITHOUT INCIDENT. THERE WAS NO EVIDENCE OF FIRE FOUND. THE NR 2 ENGINE LOWER CORE COWL FIRE LOOP ELEMENT WAS REPLACED AND THE B-LOOP FIRE WARNING SYSTEM TESTED GOOD. BOTH ENGINE FIRE BOTTLES WERE REPLACED. (X)