What was found
DURING INTERNAL DVI OF THE LT WING TANK IT WAS NOTED THAT THERE WAS CORROSION UNDER THE LT BOOST PUMP IN THE INTERNAL FUEL TANK OF THE LT WING. UPON FURTHER INVESTIGATION AND SUBSIQUENT BLEND OUT OF THE CORROSION. THE CORROSION HAD SPREAD TO A WIDTH OF 2.5 INCHES AND THROUGH THE WING SKIN COMPLETELY AT MAX DEPTH. THIS WAS CAUSING A FUEL SEEP, THOUGHT TO BE COMING FROM THE FUEL THANK WATER DRAIN.