What was found
DURING A MAINTENANCE VISIT FOUND CRACK, LT OBD L/E UPPER RIB AT FASTENER END AT STA XFS 585. DAMAGE EXCEEDED LIMITS IAW DC-8 SRM. REMOVED DAMAGED, TREATED AREA IAW DC-8 SRM 51-1-8. STOP DRILLED CRACK, FABRICATED AND INSTALLED REPAIR DOUBLER IAW DC8 SRM 57-2-0, FIG 2.