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 FS 847.00 + 16.00 TO FS 977.00 AT PASSENGER CABIN FLOOR STRUCTURE. SEAT RAIL RBL 9 BTW FS 847.00 + 16.00 TO FS 977.00 AT PASSENGER CABIN FLOOR STRUCTURE WAS EVALUATED OUT OF LIMITS PER CRJ900 SRM 53-51-49-101-001-A02 AND WAS REPLACED PER CRJ900 AMM 53-00-49.