As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ANGLE REMOVAL, CORROSION AT LH FLOOR BEAM FS 280.00 AT COCKPIT CABIN FLOOR. DUE EXCESSIVE CORROSION ON LH CROSSBEAM FS280 AT COCKPIT CABIN FLOOR WAS FOUND OF OUT LIMITS PER CRJ-900 SRM 53-00-01-101-001-A01 THEREFORE WAS REPLACED PER CRJ-900 SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01 AND SRM 51-42-13-001-001-A01