What was found
DURING A MAINTENANCE VISIT FOUND A CRACK TO THE BOTTOM RIB ON THE LEFT I/B HORIZ STAB I/B LEADING EDGE FRAME AT XFS 166, DAMAGE EXCEEDED LIMITATIONS IAW DC-8 SRM. REMOVED DAMAGE, TREATED AND PRIMED AREA IAW DC-8 SRM 51-1-8. FABRICATED AND INSTALLED DOUBLERS IAW DC-8 SRM 55-2-3, 51-1-4, 53-2-3 AND 51-1-20D.