What was found
(CAN) DURING C-CHECK INSPECTION, CHAFING DAMAGE WAS NOTED ON THE HYDRAULIC PUMP 3B SUCTION LINE P/N 601R75239-463. THIS HYDRAULIC TUBE LINE WAS RUBBING AGAINST THE UPLOCK NR 3 HYDRAULIC TUBE LINE (P/N 601R75239-273) THAT FEEDS INTO THE EXTEND LINE FOR THE RHS MAIN LANDING GEAR RETRACTION ACTUATOR. THE HYDRAULIC LINE HAS BEEN ORDERED AND WILL BE REPLACED BEFORE THE AIRCRAFT LEAVES THE HEAVY CHECK. (TC NR 20070828002)