As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CABIN APPROX. FS 559.00 TO 559.00 +96 RIGHT HAND FLOOR SILL BL 42.90 HAS NUMEROUS SPOTS OF CORROSION (MARKED) (C CHECK) RO 3/27/2020 REPLACED AFT CABIN APPROX FS559.00 TO FS559.00+16 RIGHT HAND FLOOR SILL INTERCOSTAL BL42.90 REF BOMBARDIER DWG, CRJ 200 SRM, SEE CONTINUATION CARD FOR DETAILS. FOUND THE RIGHT FLOOR SILL FROM 559+16 TO 559+96 AT BL 42.90 TO BE IN LIMITS.