What was found
KAUS - FLT 107 - AFTER TAKEOFF FROM KAUS NR 2 ENGINE FIRE WARNING SOUNDED. THE FLIGHT CREW SHUTDOWN NR 2 ENGINE AND RETURNED TO KAUS. MAINTENANCE FOUND NO EVIDENCE OF FIRE. MAINTENANCE FOUND A CLAMP OFF AT THE HIGH STAGE BLEED VALVE ELBOW DUCT. MAINTENANCE RECLAMPED THE ELBOW DUCT AND REPAIRED DAMAGED WIRING TO THE PNEUMATIC PRESSURE REGULATOR. AN OPERATIONAL CHECK OF THE NR 2 ENGINE PNEUMATIC REGULATOR, FIRE WARNING SYSTEM, AND THE ENGINE WAS GOOD. (M)