What was found
DURING C-CHECK ON FUSELAGE RING ANGLE, CORROSION REPAIR ON FS 1680 IAW EO 9505073 WAS NECESSARY TO ACCOMPLISH A FUSELAGE SKIN CUTOUT AT FS 1680, BETWEEN L26L TO L26R TO ACCOMPLISH RING ANGLE REPAIR. AFTER COMPLETION OF RING ANGLE REPAIR, INSTALLED A .071 7075-T6 SKIN TO FILL CUTOUT, WITH AN .080 7075-T6 SPLICE STRAP INSTALLED. ALSO, AN .080 7075-T6 EXTERNAL DOUBLER INSTALLED AT FS 1680 BETWEEN L28L TO L30L. ALL REPAIRS ACCOMPLISHED IAW EO 9505221.