As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PAX DOOR AFT DD3 INTERCOSTAL IS CORRODED (C-CHECK RO 9/13/2023) PAX DOOR AFT DD3 INTERCOSTAL CORROSION IS OUT OF LIMITS. REMOVED AND INSTALLED NEW PAX AFT DD3 INTERCOSTAL REF CRJ200 SRM 51-42-06. AND DWG 601R31702 REV. N. COMPLIED WITH TASK CARD 51-900-1003-SKY. NO LEAKS NOTED.