What was found
DURING A MAINTENANCE VISIT FOUND CORROSION, FUSELAGE, RT UPPER CUSP MEMBRANE WEB AT STA 560, LONGERON 21 RIGHT. DAMAGE EXCEEDED LIMITS IAW DC-8 SRM. REMOVED DAMAGED, TREATED AREA IAW DC-8 SRM 51-1-8. FABRICATED AND INSTALLED DOUBLERS IAW FAA APPROVED TENNESSEE TECHNICAL SERVICES DER ENGINEERING SKETCH NR 99-010 WITH 8110-3 DATED 01/25/99. (CORROSION DAMAGE RECORDED IN EWA CORROSION PROGRAM).