What was found
DURING A MAINTENANCE VISIT, FOUND FRAME LOWER SECTION WITH CORROSION DAMAGE, AT STA 1580 BETWEEN LONGERONS 35 LEFT TO 35 RIGHT. REMOVED DAMAGED SECTION, TREATED AREA IAW DC-8 SRM 51-1-8. FABRICATED AND INSTALLED REPAIR IAW FAA APPROVED DER TIMCO ENGINEERING SKETCH REO-05167.