What was found
FUSELAGE SKIN FS 680-740, STRINGER 4R, SKIN LAP SPLICE, CRACK REPAIR. LFEC INSPECTION OF THE STRINGER 4R SKIN LAP SPLICE BETWEEN FS 680 AND 740 INDICATED CRACKS IN THE LOWER FASTENER ROW OF THE LOWER SKIN. INTERNAL HFEC INSPECTION CONFIRMED 45 CRACKS ALONG THE PANEL. THE SKIN LAP WAS CUTOUT ALONG THE ENTIRE LENGTH OF THE PANEL AND REPAIRED WITH AND EXTERNAL ALUMINUM DOUBLER PER ER/A 367157-14AD.