As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT BAGGAGE BAY FLOOR, LOWER SILL CORRODED BETWEEN FS 1000 TO FS 1047, SILL OUT OF LIMITS. REMOVED/RE-INSTALLED THREE INTERCOSTAL FOR ACCESS. REMOVED/REINSTALLED LOWER COAMING AND STOP FITTINGS (2 EA) FOR ACCESS. REMOVED SILL-MATCH DRILLED NEW SILL P/N MM670-35655-003 AND INSTALLED THE NEW SILL, IAW CRJ 900 SRM 51-42-21-001-001-A01, 51-40-11-001-001-A01 AND 51-42-12-001-001-A01.