What was found
R/H F.S. 280 CROSS BEAM IS HEAVILY CORRODED AT CORNER OF TOP FLANGE. R/H F.S. 280 CROSSBEAM IS CORRODED WITH DEEP PITTING ON OUTER UPPER CORNER BETWEEN BL 0 AND RBL 12. NO ALLOWABLE DAMAGE LIMITS PROVIDED IN CRJ-900 SRM. BEAM REQUIRES REPLACEMENT. REMOVED RH FS 280 CROSSBEAM IAW CRJ 900 SRM 51-42-06-001-001-A01, 51-42-13-001-001-A01 AND 51-42-21-001-001-A01 LOCATED AND DRILLED NEW RH FS 280 BEAM PN CC670-34094-2S IAW CRJ 900 SRM 51-40-11-001-001-A01 AND 51-42-06-001-001-A01 AND 51-42-21-001-001-A01 ASSEMBLED RH FS 280 SUB ASSEMBLY INCLUDING BEAM, WEB, SPLICE AND CORROSION CAP IAW CRJ 900 SRM 51-42-06-001-001-A01 INSTALLED NEW RH FS 280 CROSSBEAM P/N: CC670-34094-2, IAW CRJ 900 SRM 51-42-06-001-001-A01, 51-42-13-001-001-A01 AND 51-42-21-001-001-A01