As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PAX DOOR INTERCOSTAL DD6 AT FWD SIDE FOUND TO BE CORRODED REMOVED PAX DOOR FWD INTERCOSTAL DD6 IAW CRJ 900 SRM 51-42-06-001-001-A01. CORRECTIVE ACTION: LOCATED AND DRILLED NEW INTERCOSTAL P/N 601R31902-485 IAW CRJ 900 SRM 51-40-11-001-001-A01, INSTALLED NEW INTERCOSTAL IAW CRJ 900 SRM 51-42-06-001-001-A01