What was found
DURING MAINTENANCE VISIT, FOUND FRAME AT FS 520 WITH MISDRILLED HOLES BETWEEN LONGERONS 6 AND 9 RIGHT AND AT LONGERON 20 LEFT. FABRICATED AND INSTALLED REPAIR ANGLES, STRAPS AND SHIMS IAW FAA DER APPROVED TIMCO ENGINEERING SKETCH REO-05591, AREA TREATED IAW DC-8 SRM 51-1-8.