What was found
DURING A MAINTENANCE VISIT, FOUND CORROSION IN AFT ACCESSORY COMPARTMENT TO SKIN DOUBLER UNDER LONGERON 33 RIGHT AT STA 1620 TO STA 1640. REMOVED CORRODED DOUBLER, TREATED AREA IAW DC-8 SRM 51-1-8. FABRICATED AND INSTALLED NEW DOUBLER IAW FAA APPROVED DER COTNEY ENGINEERING SKETCH E04-R5.