What was found
DURING ROUTINE C-CHECK INSPECTION, A CORROSION BULGE WAS FOUND ON THE EXTERNAL PLATING AT FUSELAGE STATION 360, LONGERON 35 RIGHT. REPAIR ACCOMPLISHED REMOVAL OF DAMAGED AREA, FABRICATION AND INSTALLATION OF AN INTERNAL FILLER AND AN EXTERNAL REPAIR DOUBLER IN ACCORDANCE WITH DER APPROVED DRAWING 853-208-97 AND ENGINEERING ORDER 53-DC8-721.