What was found
AT C-CHECK, FOUND SURFACE CORROSION AT STA 1080 BETWEEN STR 16R AND 18R AFT SKIN OF BUTT SEAM AND ALONG STR 17R STA 1080 TO 1090. REMOVED CORROSION ALONG STR 17R STA 1080 TO 1090, WITHIN LIMITS. INSTALLED FILLER AND EXTERNAL DOUBLER PER SRM 51-30-3 DOUBLER 8 BY 54.5.