What was found
*CORROSION ON INTERCOSTAL MID DD4 (C-CHECK RO 12/26/2021) PAX DOOR INTERCOSTAL MID DD4 HAS CORROSION ON MORE THAN ONE ELEMENT. OUT OF LIMIT REF CRJ 200 SRM 52-00-00 AND REO 670-52-11-010 REV. NC DATED 2002-02-25. REMOVED CORRODED PAX DOOR DD4 MID SECTION INTERCOSTAL REF CRJ 700 SRM 51-42-06-001-001-A01 AND SRM 51-42-21-001-001-A01. INSTALLED NEW PAX DOOR DD4 MID SECTION INTERCOSTAL REF CRJ 700 SRM 51-42-06-001-001-A01 & SRM 51-42-21-001-001-A01 AND BOMBARDIER DWG 601R31702 REV N. COMPLIED WITH ST 51-900-1002-SKY (CL600-2C10). PRESS CHECKED GOOD.