What was found
DURING ROUTINE C-CHECK INSP, FOUND LT WING OUTER WING OTBD L/E LOWER SKIN CRACKED AT STA XFS 847.500. REMOVED FASTENERS AS NEEDED TO PERFORM REPAIR. REMOVED DAMAGED SKIN. PERFORMED NDT INSP. NO CRACKS OR CORROSION NOTED. FABRICATED NEW SKIN, FILLERS AND DOUBLERS. CLEANED, TREATED, AND PRIMED AREA AND REPAIR PARTS. INSTALLED NEW FASTENERS AND REPAIR PARTS IAW FAA FORM 8110-3 DATED 10/15/10, DWG ED-5259 DATED 09/28/10, EO 2010571, SRM 51-1-20D, SRM 51-1-21, NDT SPM PART 06, . SRM 57-2-0, SRM 51-1-4, SRM 51-1-8B, SRM 51-1-11, SRM 51-1-20D, SRM 51-1-26, SRM 51-1-21, SRM 51-1-22, SRM 51-3-1, AND SRM 51-3-2.