As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LH FLOOR SILL FROM FS559+80 TO FS574 HAS MULTIPLE BROKEN NUTPLATES. REPLACEMENT REQUIRED. (C-CHECK RO 7/24/2021) REPLACED 13EA NUTPLATES ON LH FLOOR SILL BETWEEN FS559+80 AND FS574 IAW CRJ200 SRM 51-45-00. REFERENCE CONTINUATION CARD FOR WORK PERFORMED.