What was found
DURING ROUTINE C CHECK INSPECTION FOUND LT WING INBOARD AILERON UPPER SKIN CRACKED AT STATION XW 563.000. REMOVED FASTENERS AS NEEDED TO PERFORM REPAIR. REMOVED CRACKED SKIN. FABRICATED NEW SKIN AND BONDED DOUBLERS. BONDED PARTS AS NEEDED WITH HYSOL. CLEANED, TREATED, AND PRIMED AREA AND REPAIR PART. INSTALLED NEW FASTENERS AND REPAIR PARTS IAW SRM CHAPTER 57-8-1 FIGURE 1, SRM 51-1-21, SRM 51-1-9 TR 51-142, AND SRM 51-1-8B.