As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON FLOOR SILL RH BTW FS280 TO FS319.70 AT FLOOR STRUCTURE OF PASSENGER CABIN. CORROSION WAS EVALUATED OUT LIMITS DUE TO EXCESIVE DAMAGE THEREFORE WAS REPLACED PER CRJ-900 SRM 53-00-45-201-001-A01 AND CRJ-900 SRM 51-42-06-001-001-A01 SRM 51-42-13-001-001-A01 AND SRM 51-42-22-001-001-A01