As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RBL 9 SEAT RAIL BETWEEN FS409 AND FS469 HAS GOUGES AND CORROSION. REMOVED SEAT RAIL AT RBL9 BETWEEN FS208 TO FS477.40 IAW CRJ900 AMM 53-00-49-000-801( CONFIG A12). INSTALLED NEW SERVICEABLE SEAT RAIL WITH P/N SH670-32159-1 AT RBL9 BETWEEN FS208 TO FS477.40 IAW CRJ900 AMM 53-00-49-400-801(CONFIG A12).