What was found
DURING CRUISE, NR 3 FIRE WARNING CAME ON, THE CREW DISCHARGED BOTH FIRE BOTTLES AND SHUTDOWN NR 3 ENGINE. THE CREW LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED RT CORE SENSING ELEMENT, LT AND RT FAN FIRE SENSING ELEMENT, AND BOTH FIRE BOTTLES, OPS CHECK GOOD IAW MM 26-10-1, AND 26-20. AIRCRAFT WAS RETURNED TO SERVICE. (K)