As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT PRESSURE FLOOR SIL IS CORRODED AT (3) LOCATIONS ON THE FLOOR SKIN BETWEEN FS 424.00 AND FS 449.85. C-CHECK RO 11/11/2020. REMOVED LT PRESSURE FLOOR SILL CORROSION AT (3) LOCATIONS ON THE FLOOR SKIN BETWEEN FS 424.00 AND FS 449.85, IAW BOMBARDIER REO. WEIGHT AND BALANCE NOT AFFECTED, M-337 AND TASK CARD ATTACHED.