What was found
DURING CRUISE, NR 4 ENGINE FIRE WARNING LIGHT AND BELL CAME ON, THE CREW SHUTDOWN NR 4 ENGINE AND AS SOON AS T-HANDLE WAS PULLED THE BELL STOPPED AND LIGHT WENT OUT. THE CREW RETURNED TO DEPARTURE AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED LT AND RT CORE SENSING ELEMENT, LT FAN SENSING ELEMENT, CONNECTOR P1-7072 AND CONNECTOR P1-7087. OPERATIONAL CHECK GOOD IAW MM 26-10-0 AND 25-50-1. AIRCRAFT WAS RETURNED TO SERVICE. (K)