What was found
(CAN) DURING A C-CHECK INSPECTION IN THE RT MAIN LANDING GEAR WHEEL WELL, THE HDRAULIC SUCTION TUBE ASSY(P/N 601R75239-463) OF HYDRAULIC PUMP 3B WAS FOUND WITH CHAFING DAMAGE. THIS TUBE WAS RUBBING AGAINST THE HYDRAULIC LINE(P/N 601R75239-273),WHICH IS THE UPLOCK NR 3 LINE FEEDING INTO THE RT MAIN LANDING GEAR RETRACTION ACTUATOR.THE HYDRAULIC LINE HAS BEEN ORDERED AND WILL BE REPLACED BEFORE THE AIRCRAFT LEAVES THE HEAVY MAINTENANCE CHECK. (TC NR 20070828003)