As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SURFACE CORROSION ON FS 549 FLOOR STRUCTURE BEAM BETWEEN CENTER SEAT TRACKS ON BOTH LT INBOARD SIDE AT 3 SPOTS AND RT INBOARD SIDE, MARKED. C-CHECK RO 12/04/2020. REMOVED SURFACE CORROSION ON FS 549 FLOOR STRUCTURE BEAM BETWEEN CENTER SEAT TRACKS ON BOTH LT INBOARD SIDE AT 3 SPOTS AND RT INBOARD SIDE. WORK CARRIED OUT ON TASKCARD, REF REO. BLENDED OUT PER CRJ700 SRM.