As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PAX DOOR DD1 INTERCOSTAL ATTACH FLANGE BENT AND BULGED WITH CRACK. REMOVE DAMAGE PAX DOOR AFT DD1 INTERCOSTAL IAW CRJ 900 SRM 51-42-06-001-001-A01. LOCATED, DRILLED AND INSTALLED NEW SERVICEABLE INTERCOSTAL PN 601R31902-318 IAW CRJ 900 SRM 51-40-11-001-001-A01 AND 51-42-06-001-001-A01