As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON FLOOR SEAT TRACK AT LBL9 BETWEEN APPROX FS379.00 AND FS485.00. (C-CHECK RO 4/3/2021) REMOVED AND INSTALLED NEW FLOOR SEAT TRACK ON LBL 9.0 BETWEEN APPROX FS379.00-FS485.00 SEAT TRACK FOUND TO BE OUT OF ALLOWABLE LIMITS AFTER CORROSION REMOVAL IAW CRJ700 AMM 53-00-49-400-801-A17