What was found
FOUND DURING D-CHECK, AT SIN, CORROSION AT WING CENTER SECTION UPPE SKIN AT REAR SPAR BETWEEN BL 0 AND RBL 11.33. CORROSION WAS BLENDED USING A 20:1 RATIO, 125 RHR OR BETTER AND REMAINING THICKINESS TO BE .381 INCH OR GREATER. BLENDED AREA WAS SHOP/FLAP PEENED AND REFINISHED WITH ALODINE 600 AND BMS 10-11, TYPE PRIMER. OPEN HOLES WERE HFEC INSPECTED TO ENSURE NO DEFECTS EXIST. BACB30PT FASTENERS WRE REPLACED WITH BACB30NZ10KX OR BACB30NW10KX HI-LOCKS WITH BACC30M10 COLLARS IN .0005/.0035 INCH INTERFERENCE FIT HOLES. BLENDED AREAS FILLED WITH SEALANT TO PREVENT ACCUMULATION OF MOISTURE. RESTORED FUEL BARRIER WITH MNS 5-81 TYPE 2. (M)