As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERCOSTAL AT STGR 20R BETWEEN FS 310.00 AND FS 319.70 CORRODED. C-CHECK RO 9/27/2020. REMOVED OUT OF LIMITS INTERCOSTAL AND INSTALLED NEW SERVICEABLE INTERCOSTAL AT STGR 20R FS310.00 TO FS319.70, REF CRJ700 SRM AND DWG. ALL CHECK GOOD COMPLIED WITH.