As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON SEAT RAILS OF LBL27 BTW FS485.00 TO FS581.00 (2EA). DUE TO ONLY ONE TYPE OF DAMAGE IS ALLOWED AT ANY TYPICAL CROSS-SECTION, SEAT RAILS OF LBL27 BTW FS485.00 TO FS581.00 (2EA) ARE OUT OF LIMITS PER CRJ900 SRM 53-31-49-101-001-A02 THEREFORE WERE REPLACED PER CRJ 900 AMM 53-00-49