What was found
MISSING PAINT WITH MINOR CORROSION ON MIDDLE RT WING, UNDER THE SLAT, AT THE WING LIFTING POINT. CORROSION IS LOCATED ON WING PLANK AT LIFT POINT IN MACHINED CUTOUT. CUTOUT IS FILLED WITH SEALANT. CORROSION LOCATED UNDER SEALANT ON WING PLANK. REMOVED CORROSION AND DETERMINED REMAINING MATERIAL THICKNESS. RECEIVED APPROVAL FROM MFG, DATED 05/08/08 TO PERFORM NDT INSPECTION FOR CRACKS, APPLY ANTI CORROSION PROTECTION IAW THE MM 20-600, APPLY PREVENTITIVE TO CAVITY, FILL WITH 3M STRUCTURAL VOID FILLING COMPOUND NR3524 TO RESTORE CONTOUR AND APPLY PAINT IAW 20-605. AIRCRAFT WAS RETURNED TO SERVICE.