As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER REMOVAL OF PAX DOOR INNER SKIN FOUND SERVRE CORROSION ON INTERCOSTAL DD3 (C-CHECK RO 5/20/2021) REMOVED AND INSTALLED NEW PAX DOOR INTERCOSTAL DD3 REF CRJ200 SRM 51-42-06, CRJ200 SRM 51-42-21, AND DWG 601R31702 REV-N. PRESSURE CHECK GOOD. COMPLIED WITH TASK CARD 51-900-1003-SKY.