What was found
DURING C-CHECK, FOUND FORWARD RT LOWER SIDE OF INTERNAL FUSELAGE BETWEN FS 168 TO FS 188, AND BETWEEN L27R AND L28R, SMALL INTERCOSTAL HAS CORROSION. REMOVED INTERCOSTAL WITH CORROSION, FABRICATED NEW INTERCOSTAL IAW SRM 53-2-0, TREATED, PRIMED, AND INSTALLED IAW SRM 51-1-21, SRM 51-1-18, AND SRM 51-1-20D.