What was found
ON FLIGHT 3308 THE CREW REPORTED THAT THEY RECEIVED AN ENGINE 2 BLEEDC LEAK MESSAGE DURING CLIMBOUT. ELECTED TO RETURN TO CVG AND DECLARED AN EMERGENCY. LANDED WITHOUT INCIDENT. REMOVED PANELS FOR ENTIRE BLEED 2 SYSTEM. TROUBLESHOT SYSTEM AND FOUND PRECOOLER V-BAND CLAMP UNDER TORQUED AND UPPER PORTION OF DUCT (P/N 816619-1) HAD BLOWN OFF OF NR 2 PACK. TORQUED PRECOOLER CLAMP AS NEEDED AND REMOVED AND REPLACED PACK FLEXIBLE DUCT COUPLER AND CLAMP. RAN SYSTEM. FOUND LEAK CHECK TO BE GOOD. INSTALLED ALL PANELS FOR BLEED 2 SYSTEM. RAN AIRCRAFT AND OPS CHECKED BLEED 2 SYSTEM FOR SEVERAL MINS AT TAKEOFF POWER. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.