As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD FRAME FLANGE HAS CORROSION IN BETWEEN STR 26L AND STR 26R AT FS 310.0 IN LOWER AVIONICS BAY BELOW FLOORBOARD. C-CHECK RO 9/5/2020. REPAIRED FS 310 FRAME BETWEEN STR 26L AND STR 26R, REF CRJ700 SRM. LEAK CHECK GOOD. COMPLIED WITH TASK CARD.