What was found
L/H FS280 LOWER WEB IS CORRODED AT LBL 12 REMOVED CORROSION AT LBL 12 ON FS 280 LOWER WEB IAW CRJ 900 SRM 51-21-06-001-001-A01. ORIGINAL THICKNESS OF WEB WAS .040, REMOVED .015 OF MATERIAL AND REMAINING THICKNESS IS .025, WHICH IS OUT OF LIMITS IAW CRJ 900 SRM 53-00-00-101-001-A01. LOWER WEB REQUIRES REPLACEMENT OR REPAIR. REMOVED AND REPLACED L/H FS 280 LOWER WEB AND BUTT STRAP IAW CRJ 900 SRM 51-24-36-001-001-A01, 51-40-11-001-001-A01 AND USING SRM 53-11-10-201-004-A01 FOR MATERIAL CALLOUT. PO# FOR METAL IS 5-4871. PAINTED AND APPLIED CIC TO L/H FS 280 LOWER WEB IAW CRJ 900 SRM 51-25-16-001-001-A01 AND SRM 51-21-11-001-001-A01.