As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION IN SEAT RAIL LBL9 BTW FS364.00 TO FS682.00 (4 EAS). SEAT RAIL LBL9 BTW FS364.00 TO FS682.00 (4 EAS) ARE OUT OF LIMITS PER CRJ-900 SRM 53-21-49-101-001-A01 AND SRM 53-31-49-101-001-A02 THEREFORE WERE REPLACED PER CRJ-900 AMM 53-00-49 (CONFIG A12).