As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT FLOOR SILLS BETWEEN FS 1000-1047 HAS CORROSION. C-CHECK RO 10/16/2020. CORROSION ON LT FLOOR SILL BETWEEN FS 1000.00 & FS 1047.00 WAS FOUND TO BE OUT OF LIMITS AND WAS REPLACED WITH A NEW AFT CARGO DOOR FLOOR SILL P/N: MM670-35655-003. RESTORED FINISH AND APPLIED CIC, REF CRJ700 SRM. COMPLIED WITH SKYCARD STRUCTURAL MAJOR REPAIR (RII).