As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
*CORROSION ON LH FLOOR SILL UNDER FWD OVERWING EMERGENCY EXIT DOOR BETWEEN FS 720.85 €“ FS 744.15 (MARKED) (C-CHECK) RO 5/10/2020 BLENDED LH FLOOR SILL UNDER FWD OVERWING EMERGENCY EXIT DOOR BETWEEN FS720.85 TO FS744.15 REF CRJ900 SRM. IN LIMITS REF BOMBARDIER REO.