What was found
DURING INSPECTION OF "C" CHECK CARD 1C421481, FOUND CORROSION ON THE LOWER SKIN SURFACE OF THE RT WING CENTER SECTION AT BS 559-562, RBL 52 - RBL 58 AT STIFFNER 9C. AREA IS 3" X 6" WITH A MAXIMUM BLEND OUT DEPTH OF 0.090" (OUT OF SRM LIMITS). REQUESTED A REPAIR PROCEDURE FROM MFG AND RECEIVED A REPAIR SCHEME FROM MFG, ACCOMPLISHED THE REPAIR IAW BOEING "STATEMENT OF COMPLIANCE" FORM 8100-9, REF 201211210021-0003D1, DATED 5 DEC, 2012