What was found
PAX DOOR INTERCOSTAL IS CORRODED FS 311.125 #1 FROM THE TOP (C-CHECK RO 5/25/2021) REMOVED CORRPSION FROM INTERCOSTAL PER CRJ 900 SRM 51-21-06-001-001-A01. ORIGINAL MATERIAL THICKNESS IS .050 PER CRJ 900 SRM 51-11-06-01-001-A01, 100% MATERIAL LOSS INTERCOSTAL FOUND TO BE OUT OF LIMITS PER CRJ 900 SRM 52-11-04-001-001-A01. INSTALLED NEW INTERCOSTAL PER CRJ 900 SRM 51-42-06-001-001-A01 AND DWG 601R31702 REV N. COMPLIED WITH ST 51-900-1002-SKY. LEAK CHECKED GOOD.