What was found
R/H FS 280 LOWER WEB IS CORRODED AT RBL 12 REMOVED CORROSION AT RBL 12 ON FS 280 LOWER WEB IAW SRM 51-21-06-001-001-A01. ORIGINAL THICKNESS OF LOWER WEB IS .040, REMOVED .024 OF MATERIAL AND REMAINING THICKNESS IS .016, WHICH IS OUT OF LIMITS IAW CRJ 900 SRM 53-00-00-101-001-A01. LOWER WEB REQUIRES REPLACEMENT OR REPAIR. REMOVED AND REPLACED R/H FS 280 LOWER WEB AND BUTT STRAP IAW CRJ 900 SRM 51-24-36-001-001-A01, SRM 51-40-11-001-001-A01 AND USING SRM 53-11-10-201-004-A01 FOR MATERIAL CALLOUT. PO# FOR METAL IS 5-4871