As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OTL - DURING CRUISE ENROUTE TO OTL, NR 1 ENGINE FIRE WARNING CAME ON. SHUT DOWN THE ENGINE AND FIRED BOTH FIRE BOTTLES. LANDED AT OTL. NO EVIDENCE OF FIRE AND FIRE LOOP SYSTEM TEST AS PER THE MM. REPLACED FIRE DETECTOR CONTROL AMPLIFIER AND BOTH FIRE BOTTLES. SYSTEM GROUND TESTS NORMAL WITH ENGIEN RUNNING OR SHUT DOWN. (M)