As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN FLOOR STRUCTURE, FORWARD WET AREA (SEC 41) INTERCOSTAL P/N:141A5410-22 LOCATED AT STA 344-STA 360, LBL 11.10, WL 208.1 CRACKED AT FASTENER HOLE LOCATION. GROUNDED - YES. REMOVED AND REPLACED INTERCOSTAL PART 141A5410-148 AT STA 344-STA 360 LBL 11.10 WL 208.1 IAW SRM 51-40-02-09-0 AND DRAWING 141A5400 REV A SHEET 46.