What was found
DURING CLIMB, THE NR 1 ENGINE FIRE INDICATION ILLUMINATED WITH ALARM BELL. AIRCRAFT RETURNED TO DEPARTURE. MAINTENANCE FOUND THE B LOOP INOPERATIVE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING CLIMB, THE NR 1 ENGINE FIRE INDICATION ILLUMINATED WITH ALARM BELL. AIRCRAFT RETURNED TO DEPARTURE. MAINTENANCE FOUND THE B LOOP INOPERATIVE.