As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FRAME AT FS 333.00 CORRODED BETWEEN STGR 25L TO 25R. C-CHECK RO 9/5/2020. INSTALLED NEW FRAME AT FS 333 BETWEEN STR 25L TO 25R, IAW CRJ 200 SRM AND DRAWING. COMPLIED WITH SKYWEST AND FORM M-337. PART FOR PART REPLACEMENT. WEIGHT AND BALANCE NOT AFFECTED.