As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PAX DOOR DD4 INTERCOSTAL (P/N 601R31902-317) HAS CORROSION. C-CHECK RO 10/29/2020. REMOVED CORROSION AND FOUND PAX DOOR INTERCOSTAL DD4 TO BE OUT OF LIMITS, REF CRJ 200 SRM. REMOVED AND INSTALLED A NEW PAX DOOR INTERCOSTAL DD4, REF CRJ 200 SRM AND DWG. PERFORMED PRESSURE CHECK, REF CRJ 200 AMM PRESSURE CHECK GOOD. COMPLIED WITH TASK CARD. SEE CONTINUATION FOR FURTHER DETAILS.