As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON SEAT RAIL FROM FS349.00 TO FS477.00 AT RBL9 (2EAS). SEAT RAILS FROM FS349.00 TO FS477.00 AT RBL9 (2EAS) WERE EVALUATED OUT OF LIMITS PER CRJ900 SRM 53-21-49-101-A01 AND REPLACED PER CRJ 900 AMM 53-00-49-400-801 (CONFIG A12)