As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PAX DOOR INTERCOSTAL LOCATED BETWEEN STA321 AND STA337 DD4 IS CORRODED. (C-CHECK RO 9/27/2021) CORRODED AREA WAS FOUND TO BE OUT OF LIMITS. REMOVED AND REPLACED PAX DOOR DD4 INTERCOSTAL PN: 601R318081-1 IAW CRJ 700 SRM 51-42-06-001-001-A01 AND DWG 601R31702 REV N. COMPLIED WITH TASK CARD 51-900-1002-SKY.