What was found
RT HORIZ L/E PANEL 341AB, INTERNAL STIFFENER CRACKED AT AFT END, FROM FASTENER TO EDGE OF PART, .3125" LONG, UPPER AFT CORNER OF PANEL. REMOVED FASTENERS HORZ L/E PANEL 341AB STOP-DRILLED CRACK ON INTERNAL STIFFENER, NDT FOR CRACKS. NO CRACKS WERE FOUND, FABRICATED, DRILLED AND INSTALLED 2 EA DOUBLERS IAW SRM 55-12-19FIG201. REPROTECTED AREA IAW SRM 51-75-10.