As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLOOR SUPPORT ANGLES AT FS280, LBL 9 ARE CRACKED. (FOUND DURING C-CHECK INSPECTION). INSTALLED NEW SUPPORT ANGLES AT FS 280 RBL 9 INBOARD AND OUTBOARD AND LBL 9 INBOARD AND OUTBOARD IAW CRJ 200 SRM 51-42-06, 51-42-13, 51-42-21, AND EO 601R-53-4942. SEE RII 53-401.