As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT CABIN PRESSURE FLOOR SILL HAS CORROSION FROM FS409+128 TO FS 559.00 ON BOTH THE FLOOR SILL PANEL AND FLOOR ANGLES. C-CHECK RO 8/29/2020. REPAIRED RT CABIN FLOOR SILL IAW MHIRJ REO AND CRJ 200 SRM. COMPLIED WITH SKYCARD AND FORM M-337. SEE CONTINUATION CARD FOR DETAILS OF WORK PREFORMED. WEIGHT AND BALANCE NOT AFFECTED.