What was found
(CAN) MAINTENANCE WAS TROUBLESHOOTING A REPORTED FUEL SEEP FROM THE FUEL SHROUD DRAIN FOLLOWING AIRCRAFT REFUELING. WELDED REFUEL/DEFUEL TUBE ASSEMBLY P/N 72810012-001 WAS FOUND WITH A PIN HOLE CAUSED BY CHAFING OF THE WELDED REFUEL/DEFUEL TUBE ASSEMBLY WITH THE REFUEL ADAPTER OUTSIDE COVER HOSE ASSEMBLY P/N DSC214-20-161-05 (SEE 28-25-00 FIG 10 AND PHOTOS ATTACHED). MAINTENANCE IS REPLACING THE WELDED REFUEL/DEFUEL TUBE ASSEMBLY.