What was found
FLT 584 - MCI - EMERGENCY DECLARED, LANDING UNEVENTFUL. APU FIRE WARNING BELL AND LIGHT CAME ON IN FLIGHT. APU REPORTED TO BE SHUT DOWN WHEN FIRE WARNING SOUNDED. CREW DISCHARGED APU EXTINGUISHER BOTTLE PERFORMED DETAILED VISUAL INSPECTION OF APU, SHROUD, STAB CROSS THROUGH AND APU TAILPIPE AREAS. CONFIRMED NO FIRE OCCURRED. REPAIRED BROKEN WIRE AT APU EXHAUST DUCT SENSOR AREA. REPLACED APU FIRE BOTTLE AND DISCHARGE DISK PER MM 26-22-11. OK FOR SERVICE. (M)