As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON SEAT RAIL RBL 9 BTW F.S.349.00 TO F.S. 485.00. SEAT RAIL RBL 9 BTW F.S.349.00 TO F.S. 485.00 WAS EVALUATED OUT LIMITS PER CRJ-900 SRM 53-31-49-101-001-A02; CRJ900 SRM 53-21-49-101-001-A01 AND WAS REPLACED PER CRJ900 AMM 53-00-49 (CONFIG A12)