As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT FUSELAGE INTERIOR, FLOORBOARD SUPPORT STRUCTURE CORRODED, 8" LEFT OF CTR LINE, 3" FWD OF FS 559+16 *********AIRCRAFT REMOVED FROM SERVICE************** REMOVED AND INSTALLED NEW FLOOR SUPPORT T. CAP FROM FS 559 TO 559+112 LBL 9.00 IAW CRJ 200 SRSM 51-40-11 AND EA 105-2023-042