What was found
DURING A MAINTENANCE VISIT FOUND CORROSION , FUSELAGE, CABIN FLOOR PLANK BETWEEN STA 420 AND STA 520 AT BL 12 LEFT. DAMAGE EXCEEDED LIMITS IAW DC-8 SRM. REMOVED DAMAGED, TREATED AREA IAW DC-8 SRM 51-1-8. FABRICATED AND INSTALLED REPAIR DOUBLER IAW DC8 SRM 51-2-3 FIG 10 PGS 39/40. (CORROSION DAMAGE RECORDED IN EWA CORROSION PROGRAM).