As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PAX DOOR INTERCOSTAL AT DD4 FS338-347 HAS CORROSION (C-CHECK RO 11/04/2021) REMOVED AND REPLACED PAX DOOR INTERCOSTAL AT DD4 FS338-347 IAW CRJ900 SRM 51-42-06-001-001-A01 AND DWG 601R31702 REV-N, SEE CONTINUATION FOR WORK ACCOMPLISHED, COMPLIED WITH TASK CARD 51-900-1002SKY