As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION FOUND ON CLIP @ FS 329.563 TOP SIDE OF PAX DOOR (C-CHECK RO 5/25/2021) REPLACED CLIP PN: 601R318058-1, COMMON TO PAX DOOR FRAME AT FS327.763 AND INTERCOSTAL DD7A IAW CRJ900 SRM 51-42-06-001-001-A01 & DWG 601R31702 REV N, COMPLIED WITH 337 FORM, COMPLIED WITH TASK CARD 51-900-1002-SKY