As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON LT FLOOR SILL BETWEEN FS 409.00+32 TO 409.00+48, AREAS MARKED. C-CHECK RO 10/20/2020. BLENDED TO REMOVE THE CORROSION ON LT FLOOR SILL BETWEEN FS 409.00+32 TO 409.00+48, REF CRJ-200 SRM. EVALUATED AND FOUND TO BE OUT OF LIMITS. SUBMITTED TO ENGINEERING AND RECIEVED MHI RJ REO. ALL STEPS COMPLIED WITH.