What was found
MAIN CABIN FWD WET AREA UNDER FLOORBOARD AROUND INTERCOSTAL FASTNER HOLE CORROSION BS 340, LBL 11. ACFT GROUNDED. REMOVED CORROSION FROM INTERCOSTAL ORIGINAL THICKNESS .080", REMOVED .021" REMAINING .059", FOUND TO BE OUT OF LIMITS IAW SRM 53-10-51, ALLOWABLE DAMAGE 1 TOOL T8225Y, REMOVED NEW INTERCOSTAL IAW SRM 51-40-02, LOCATED, DRILLED & INSTALLED NEW INTERCOSTAL IAW DWG 141A5410, REV A.