What was found
(AUS) RIGHT WING FUEL TANK FOD. ON REMOVAL OF THE RIGHT WING FUEL TANK ACCESS PANEL, A PIECE OF RAG MEASURING APPROXIMATELY 300 MM BY 300 MM (11.8 INCHES BY 11.8 INCHES) WAS FOUND IN THE BOTTOM OF THE TANK COVERING ONE FUEL TANK FLOW VALVE AND THE MAIN FUEL SUCTION PORT. THE PANEL WAS REMOVED DUE TO A LARGE FUEL STAIN ON THE TOP SURFACE OF THE WING. IT WAS NOTED THAT THE PANEL HAD BEEN INCORRECTLY INSTALLED AND NO SEALANT HAD BEEN USED. FOD.