What was found
DURING ROUTINE C-CHECK INSP FOUND RT WING NR 4 STUB WING LOWER SKIN CRACKED. REMOVED FASTENERS AS NEEDED TO PERFORM REPAIR. REMOVED DAMAGED AREA. PERFORMED NDT INSP. NO DISCREPANCY FOUND. FABRICATED NEW SKIN, EXTERNAL DOUBLERS AND INTERNAL DOUBLERS. PERFORMED HEAT TREATMENT. CLEANED, TREATED, PRIMED AREA AND REPAIR PARTS. INSTALLED NEW FASTENERS AND REPAIR PARTS IAW FORM 8110-3, DWG ED-5190, SRM 51-1-20D, NDT SPM PART 06-10-01-001, SRM 51-1-1, SRM 51-1-8B, SRM 51-1-21, SRM 51-1-20D, AND SRM 51-3-1.