As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PAX DOOR AFT DD4 INTERCOSTAL IS CORRODED (C-CHECK RO 7/5/2021) REMOVED AND REPLACED PAX DOOR AFT DD4 INTERCOSTAL WITH A SERVICEABLE UNIT PER CRJ700 SRM 51-42-06-001-001-A01 & BOMBARDIER DWG 601R31702 REV. N. RESTORED FINISH AND REAPPLIED CIC AT REPAIRED LOCATION. PRESSURE LEAK CHECK GOOD. COMPLIED WITH SW TASK CARD 51-900-1002-SKY.