What was found
REPAIRED THE CORRODED AREAS OF THE UPPER SURFACE OF THE UPPER WING SKINS LOCATED UNDER AND ADJACENT TO THE DRAG ANGLES (WING-TO-FUSELAGE FAIRING ATTACHMENT ANGLES) BY REMOVING ALL THREE DRAG ANGLES FROM BOTH THE LH & RH WINGS, MECHANICALLY BLENDING CORRODED AREAS, PERFORMING NDT AND REPORTING RESULTS FOR REPAIR DISPOSITION. CLEANED, TREATED AND PRIMED AREAS FOUND ACCEPTABLE PER TEXTRON FIELD REPAIR. REPLACED AN UPPER WING SKIN WITH NEW TEXTRON P/N 6922680-28 ON RH WING.