What was found
LEFT WING INBOARD LEADING EDGE CAVITY; FWD SPAR HAS CORROSION UNDER TOP BONDING WIRE ATTACH POINT FOR #1 TANK FWD BOOST PUMP. / BLENDED CORROSION ON L/H WING FWD BOOST PUMP AT UPPER BONDING WIRE ATTACH POINT. MEASURED AREA BY V.T. METHOD IN 1/4' AND FOUND REMAINING THICKNESS AT DEEPEST AREA TO BE .311'. BOEING FINDS THIS TO BE STRUCTURALLY ACCEPTABLE RESTORED SURFACE FINISH IAW EA 1-757-15469 REV IR AND EA 180470 IR. PERFORMED OPS CHECK OF BOOST PUMP IAW AMM 28-22-41-710-801 OPS CHECK GOOD.