As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION AND SCRATCHES ON SEAT RAIL RBL9.00, FS421.00 TO FS485.00. SEAT RAIL RBL9 BTW FS=421.00 TO FS=485.00 (1 EA) WAS FOUND OUT OF LIMITS PER CRJ-900 SRM 53-21-49-101-001-A01 AND SRM 53-31-49-101-001-A02 THEREFORE WAS REPLACED PER AMM 53-00-49(CONFIG A12)