What was found
AFTER TAKEOFF FROM TOL, EN ROUTE TO FLL, THE NUMBER TWO ENGINE FIRE WARNING BELL INTERMITTENTLY SOUNDED. THE FLIGHT CREW SECURED THE ENGINE FOLLOWING COMPANY PROCEDURES AND RETURNED TO TOL FOR AN UNEVENTFUL LANDING. MAINTENANCE INSPECTED THE ENGINE WHICH REVEALED TWO DEFECTIVE FIRE WARNING SENSE ELEMENTS. MAINTENANCE REPLACED THE UPPER AND LOWER FIRE WARNING SENSE ELEMENTS AND THE FIRE DETECTOR CONTROL AMPLIFIER AS A PRECAUTION. MAINTENANCE PERFORMED A SUCCESSFUL OPERATIONAL TEST IN ACCORDANCE WITH THE MAINTENANCE MANUAL AND THE AIRCRAFT WAS RETURNED TO SERVICE.