What was found
WING A/I INOPERATIVE, FOLLOWED BY ICE COND, A/I INOPERATIVE AND LOW A/I CAPACITY PRESENTED ON EICAS. PERFORMED A/I TEST WITH CREW AND WAS ABLE TO DUPLICATE FAULT. WING A/I FAIL EICAS MESSAGE WITH CMC WING 2 A/I LOW PRESSURE 02/10 2249 02 0210 2251. POSSIBLE LEAK FOUND ON PACK #2 "Y" DUCTING CONNECTED TO DTC. FOUND LEAKS ON UPPER AND LOWER SLEEVES ON RH Y DUCT AS WELL AS DAMAGE TO THE INSULATION ON THE DUCT. PERFORMED REMOVAL AND REPLACEMENT OF Y DUCT AND BOTH SLEEVES. LEAK CHECK SAT. REMOVED AND REPLACED PNEUMATIC REGULATOR. PERFORMED OPS CHECK OF ICE AND RAIN PROTECTION SYSTEM. OPS CHECK SAT. NO WING A/I INOPERATIVE MESSAGE, A/I INOPERATIVE MESSAGE AND LOW A/I CAPACITY MESSAGE PRESENT DURING OPS CHECK. VERIFIED THAT LINE FROM REGULATOR TO MANIFOLD WAS CLEAR AND FREE FROM DEBRIS. ACCESS PANELS 191EL AND 191KL HAVE BEEN REINSTALLED.