As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON FWD, MID AND AFT CAP ANGLES (PASSENGER FLOOR SILL AREA) AT PAX CABIN FLOOR STRUCTURE DUE TO EXCESSIVE CORROSION ON FWD, MID AND AFT CAP ANGLES (PASSENGER FLOOR SILL AREA) AT PAX CABIN FLOOR STRUCTURE WERE REPLACED PER CRJ-900 SRM 51-10-06-001-001-A01, SRM 51-42-06-001-001-A01 AND SRM 51-41-02-001-001-A01