As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PAX DOOR HAS A CRACKED INTERCOSTAL UNDER THE AFT SIDE WEB BETWEEN THE ACCESS PANELS 832AR AND 832BR, DISCOVERED DURING C-CHECK INSPECTION. INSTALLED INTERCOSTAL; PN 601R31902-318S ON AFT SIDE WEB BETWEEN PANELS 832AR AND 832BR ON PAX DOOR IAW CRJ200 SRM 51-42-21 PG 17 PARA 9 AND REO 601R-52-8804.