What was found
FUSELAGE SKIN FS 681-740, STRINGER 4R, SKIN LAP SPLICE, REPAIR FOR CRACKS. LFEC INSPECTION REVEALED CRACKS IN THE LOWER SKIN OF THE STRINGER 4R LAP SPLICE BETWEEN FS 681 AND 740. INTERNAL HFEC INSPECTION VERIFIED 15 CRACKS ALONG THE LOWER ROW OF FASTENERS IN THE LOWER SKIN. THE SKIN LAP WAS CUTOUT ALONG THE PANEL LENGTH AND REPAIRED WITH AN EXTERNAL ALUMINUM DOUBLER PER ER/A 366662-14, REV A.