What was found
(CAN) IN FLIGHT, THE AIRCRAFT`S NR 1 ENGINE ZONE 2 FIRE WARNING ACTIVATED. THE FLIGHT CREW ACCOMPLISHED THE ENGINE FIRE WARNING SHUTDOWN PROCEDURE AND CHECKLISTS, WHICH RESULTED IN A PRECAUTIONARY ENGINE SHUTDOWN. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT LANDED FOR AN UNEVENTFUL LANDING. THE MAINTENANCE INSPECTION FOUND THE FWD RT FIRE SENSING ELEMENT LOOP SEGMENT HAD FAILED. THE FWD RT FIRE SENSING LOOP SEGMENT WAS REPLACED AND THE AIRCRAFT RETURNED TO SERVICE. ALL SUBSEQUENT OPERATIONS WERE NORMAL. (TC# 20180103009)