As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
* CABIN FLOOR SEAT TRACK SECTION FS 581.00 TO FS 661.00 + 32 , RBL 9 HAS SEVERAL AREAS OF CORROSION. (C-CHECK RO 9/8/2021) INSTALLED NEW SEAT TRACK P/N: SH690-33404-1 ON RBL9 BETWEEN FS581- FS661+32 REF CRJ-900 AMM 53-00-49-400-801-A07 / USED CALIBRATED TOOL TUC8607 CAL DUE DATE: 28-FEB-22 / ORDERED NEW HARDWARE AS REQUIRED FOR INSTALLATION