What was found
DURING A MAINTENANCE VISIT FOUND A CRACK TO THE I/B BOTTOM RIB ON THE LEFT I/B STAB LEADING EDGE FRAME AT XFS 172, DAMAGE EXCEEDED LIMITATIONS IAW DC-8 SRM. REMOVED DAMAGE, TREATED AND PRIMED AREA IAW DC-8 SRM 51-1-8. FABRICATED AND INSTALLED DOUBLER IAW DC-8 SRM 51-1-4, 53-2-0 AND 51-1-20D.