As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGER DOOR: INTERCOSTALL DD3 IS CORRODED (MARKED). (C-CHECK) RO 4/16/2020 CORROSION IS PRESENT ON ALL 3EA ELEMENTS AND COVERS MORETHAN 30% OF THE LENGHT OF PART OUT OF LIMITS REF CRJ200 SRM. REMOVED PAX DOOR MID INTERCOSTAL DD3 IAW CRJ 200 SRM. INSTALLED NEW PAX DOOR INTERCOSTAL DD3 IAW CRJ 200 SRM AND BOMBARDIER DWG. PRESSURE CHECKS GOOD.