As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON SEAT RAILS RBL9 (03 SEGMENTS) BTW FS 581.00 TO FS 670.00 AT PASSENGER CABIN. SEAT RAILS RBL9 (03 SEGMENTS) BTW FS 581.00 TO FS 670.00 AT PASSENGER CABIN ARE OUT OFF LIMITS PER CRJ-900 SRM 53-31-49-101-001-A02 AND WERE REPLACED PER CRJ900 AMM 53-00-49 (CONFIG A12)