As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLOOR SUPPORT PLATE BETWEEN RBL9 TO RBL27 AT FS559+80 HAS CORROSION ***AIRCRAFT REMOVED FROM SERVICE ***** REMOVED AND REPLACED FLOOR SUPPORT PLATE BETWEEN RBL9-RBL27 DUE TO CORROSION EXCEEDING ALLOWABLE DAMAGE LIMITS. REF CRJ 200 SRM 51-42-06