As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON RBL9/LBL9 SEAT TRACK BTW FS661.00+90-FS693.00. AT FLOOR STRUCTURE. DUE TO EXCESSIVE DAMAGE ON RBL9/LBL9 SEAT TRACK BTW FS 661.00 + 16 TO FS 693.00 AT FLOOR STRUCTURE WERE REPLACED PER CRJ900 SRM 53-31-49-101-001-A02 AND CRJ900 AMM 53-00-49 (CONFIG A07)