What was found
FOUND CORROSION AT MULTIPLE AREAS OF PAX DOOR INNER STRUCTURE MIDDLE INTERCOSTAL DD4 . (C-CHECK RO 10/4/2021) REMOVED CORROSION FORM PAX DOOR MIDDLE INTERCOSTAL DD4 REF CRJ200 SRM 51-21-06 .FOUND TO BE OUT OF LIMITS. REMOVED AND INSTALLED NEW DD4 INTERCOSTAL REF CRJ200 SRM 51-42-06, CRJ200 SRM 51-42-21, CRJ200 SRM 51-23-00, AND DWG 601R31902 REV-BW. PRESSURE CHECK GOOD. COMPLIED WITH TASK CARD 51-900-1003-SKY.