As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT CABIN FLOOR SILL IS CORRODED BETWEEN FS 559.00+64 AND FS 559.00+80 AT NUMEROUS LOCATIONS TO INCLUDE AREAS OF SILL PARTIALLY COVERED BY AIR DUCT INTERFACES. C-CHECK RO 10/1/2020. REPAIRED CORRODED AREAS OF LT SIDE SILL FROM FS 559+48 TO 559+80, IAW BOMBARDIER REO.