As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON SEAT RAIL (SEVERAL LOCATIONS) BTW FS847.00+16.00 TO FS977.00 LBL/RBL 9.00 AT PASSENGER CABIN. SEAT RAIL BTW FS847.00+16.00 TO FS977.00 LBL/RBL 9.00 AT PASSENGER CABIN WERE EVALUATED OUT OF LIMITS PER CRJ-900 SRM 53-31-49-101-001-A02 AND WERE REPLACED PER CRJ900 AMM 53-00-49 (CONFIG A12)