What was found
DURING ROUTINE C CHECK INSPECTION, FOUND RIGHT WING UPPER SKIN CRACKED AT STATION XCW 69.500. REMOVED FASTENERS AS NEEDED TO PERFORM REPAIR. REMOVED DAMAGED AREA. PERFORMED NDT INSPECTION. NO CRACK AND NO CORROSION NOTED. FABRICATED NEW SKIN, FILLER PLUG. PERFORMED HEAT TREATMENT. CLEANED, TREATED, PRIMED AREA AND REPAIR DOUBLER. INSTALLED NEW FASTENERS AND REPAIR PARTS IAW SRM 57-2-1 FIGURE 20 SHEETS 1-3, SRM 51-1-20D, NDT SPM PART 06-10-01-001, SRM 57-3-2 FIGURE 15 ITEM "J", SRM 51-10-0 FIGURE 1 SHEET 21, SRM 51-1-1 PAGES 1,13,AND 17, SRM 51-1-12, SRM 51-1-8B, AND SRM 51-3-1.