As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON SEAT RAIL RBL9 BTW FS565 TO FS 677. SEAT RAILS RBL9 BTW FS565 TO FS 677 (3EAS) WERE EVALUATED OUT OF LIMITS PER CRJ-900 SRM 53-31-49-101-001-A02; CRJ900 SRM 53-41-49-101-001-A02 AND WERE REPLACED PER CRJ900 AMM 53-00-49 (CONFIG A12)