As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DD5 (FWD) INTERCOSTAL P/N 601R318091-5 HAS CORROSION ON BOTH SIDES OF INNER SKIN ATTACH FLANGE (MARKED) (C-CHECK RO 6/22/2021) REMOVED AND REPLACED PAX DOOR DD5 FWD INTERCOSTAL. REF CRJ900 SRM 51-42-06-001-001-A01 AMD DWG 601R31702 REV N. COMPLIED WITH TASK CARD 51-900-1002-SKY. NO LEAKS NOTED,