As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, NR 1 ENGINE FIRE WARNING WENT OFF. THE CREW SHUT DOWN NUMBER ONE ENGINE AND DISCHARGED ONE BOTTLE. THE CREW LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED ALL FIRE LOOPS, NR 1 FIRE CONTROL UNIT AND ONE FIRE BOTTLE. OPERATIONAL CHECK GOOD IAW MM 26-10-1, 26-10-4, AND 26-20-1. AIRCRAFT WAS RETURNED TO SERVICE.