As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERCOSTAL BETWEEN FS 295.00 AND FS 310.00, BETWEEN STGR 17L AND 18L CORRODED. C-CHECK RO 12/05/2020. REMOVED CORRODE INTERCOSTAL AND INSTALLED A NEW INTERCOSTAL AT FS 295 TO FS 310 AT SRINGER 17L AND 18L, REF CRJ 200 SRM AND DRAWING. PRESSURE CHECKS AND OPERATIONS TESTS GOOD.