What was found
DURING ROUTINE C CHECK INSPECTION, FOUND RIGHT WING NUMBER 4 STUB WING DOUBLER SHOWS CRACK AT STATION XS 515.720. REMOVED FASTENERS AS NEEDED TO PERFORM REPAIR. REMOVED EXISTING REPAIR. FABRICATED NEW EXTERNAL DOUBLER. CLEANED, TREATED AND PRIMED AREA AND EXTERNAL DOUBLER. INSTALLED NEW FASTENERS AND REPAIR PARTS IAW DC8 SRM 57-2-1A FIGURE 2, DC8 SRM 51-1-20D, DC8 SRM 51-1-8B, AND 51-3-1.