As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON SEAT RAIL AT LBL9 FROM FS 374.00 TO FS 699.40 AT CABIN PAX. SEAT RAIL OF RBL9 BTW FS374.00 TO FS 699.40 (SEAS) ARE OUT OF LIMITS PER CRJ900 SRM 53-21-49-101-001-A01 , CRJ900 SRM 53-31-49-101-001-A02 THEREFORE WERE REPLACED PER CRJ 900 AMM 53-00-49 CONFIG A12.