As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN UNDER FLOOR STRUCTURE INTERCOSTAL HAS CRACKS BETWEEN BS 311 AND BS 327 RBL 31 AS MARK. GROUNDED - YES. REMOVED AND REPLACED MAIN CABIN INTERCOSTAL, PART 141A5410-12 AT STA 312 - STA 328, RBL 31.60, WL 208.1 IAW DRAWING 141A5400 REV - SHEET 39.