What was found
GSO - DURING SCHEDULED MAINTENANCE CHECK, NDT INSPECTION FOUND FUSELAGE SKIN LAP, TWO .25 INCH CRACKS WERE DETECTED AT ONE RIVET AND ONE .3125 INCH CRACK WAS DETECTED AT ONE RIVET STA 727 A, STR 14 L. REPAIRED CRACKED AREA BY INSTALLING EXTERNAL DOUBLER IAW SRM 53-30-3. (X)