What was found
DURING A MAINTENANCE VISIT FOUND CORROSION, FWD LWR CARGO BILGE AT STA 500 TO STA 520, LONGERON 31 RIGHT, INTERCOSTAL. DAMAGE EXCEEDED LIMITS IAW DC-8 SRM. REMOVED DAMAGED, TREATED AREA IAW DC-8 SRM 51-1-8. FABRICATED REPAIR AND INSTALLED IAW DC-8 SRM 51-1-21 & 51-1-4. (CORROSION DAMAGE RECORDED IN EWA CORROSION PROGRAM).