As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN REF TO: AFTER SEAT RAIL REMOVAL DURING NRC: 0200, CORROSION ON FLOOR BEAM RBL 9 BTW FS= 477.00/565.00 WAS FOUND. CORROSION ON FLOOR BEAM RBL 9 BTW FS= 477.00/565.00 WAS EVALUATED PER CRJ700 SRM 53-31-43-101-001-A01 THEREFORE WAS REPAIRED PER CRJ-700 SRM 53-00-41-201-001-A01.