What was found
CORROSION FOUND ON PAX DOOR INTERCOSTAL DD4 BETWEEN FS 311.75 AND 320.163 (C-CHECK RO 5/25/2021) REMOVED CORROSION ON PAX DOOR INTERCOSTAL DD4 PER CRJ 900 SRM 51-21- 06-001-001-A01. ORIGINAL MATERIAL THICKNESS IS .050 PER CRJ 900 SRM 52-11-06-001-001-A01, 100% MATERIAL LOSS FOUND TO BE OUT OF LIMITS. REPLACED PAX DOOR INTERCOSTAL DD4 WITH NEW PER CRJ 900 SRM 51-42-06-001-001-A01 AND DWG 601R31702 REV N. COMPLIED WITH ST 51-900-1002-SKY. LEAK CHECK GOOD. (SEE DETAILS ON CONTINUE CARD)