What was found
L/H F.S. 280 CROSS BEAM IS CORRODED ON CORNER OF TOP FLANGE. L/H F.S. 280 CROSS BEAM IS HEAVILY CORRODED WITH DEEP PITTING ON OUTER UPPER CORNER BETWEEN BL 0 AND LBL 12. NO ALLOWABLE DAMAGE LIMITS PROVIDED IN CRJ-900 SRM. BEAM REQUIRES REPLACEMENT. REMOVED LH 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 INSTALLED NEW LH FS 280 BEAM PN CC670-34094-1S IAW CRJ 900 SRM 51-42-06-001-001-A01, CRJ900 SRM 51-42-13-001-001-A01 AND CRJ900 SRM 51-42-21-001-001-A01 LOCATED AND DRILLED NEW LH FS 280 BEAM PN CC670-34094-1S 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 LH FS 280 SUB ASSEMBLY INCLUDING BEAM, WEB, AND SPLICE IAW CRJ 900 SRM 51-42-06-001-001-A01