What was found
RIGHT WING UPPER TRAILING PANEL, ABOVE INBD AILERON INBD CORNER HAS SHEARED. FOUND CORROSION UNDER RT WING AT BULGED & SHEARED FASTENER LOCATION. REMOVED TE PANE CORROSION ON RT UPPER WING SKIN WS 433 - 448 AT REAR SPAR. THICK .210, MAT REMOVED .082, MAT REMAINING .128. FOUND TO BE OUT OF LIMITS. PERFORMED INSPECTION OF AREA, NO CRACKS NOTED. FABRICATED FILLERS USING 7075-T6 .080 BARE PO 80 7075-T6.050 BARE PO 829536.1. LOCATED, DRILLED & REPAIRED AREA. PARTS INSTALLED REPAIR PARTS & TE PANEL. PERFORMED IAW REO-GL9204 REV A & REV 8657-61. PART NAME SKIN, LOCATION RT WING UPPER SKIN WS 433, DAMAGE SIZE 2.0"X15"X.082, MAX DEPTH. ACFT WAS GNDED.