What was found
DURING A MAINTENANCE VISIT FOUND CRACK, RT WING, L/E LWR SKIN, INTERNAL DOUBLER, AT STA XFS 572.5 AT THE DRAIN HOLE. DAMAGE EXCEEDED LIMITS IAW DC-8 SRM. REMOVED DAMAGED, TREATED AREA IAW DC-8 SRM 51-1-8. FABRICATED AND INSTALLED DOUBLER IAW DAC DWG NR 676900, AND DC8 SRM 51-1-20 AND 51-1-21D.