As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LFEC INSPECTION OF THE STRINGER 4R SKIN LAP SPLICE BETWEEN FS 481 AND 680 INDICATED CRACKS IN THE LOWER FASTENER ROW OF THE LOWER SKIN PANEL. HFEC INTERNAL INSPECTION CONFIRMED 7 CRACK LOCATIONS ALONG THE PANEL. THE ENTIRE LAP SPLICE WAS CUTOUT ALONG THE PANEL LENGTH. THE LAP WAS REPLACED WITH AN EXTERNAL ALUMINUM DOUBLER PER ER/A 366740-14, REV A.