What was found
R/H 280 TO 319 FS FLOOR SILL CORRODED. REMOVED, LOCATED AND DRILLED NEW SERVICEABLE R/H 280 FLOOR SILL P/N: SH 670-32-172-11 IAW CRJ 900 SRM 51-42-06-001-001-A01, 51-42-21-001-001-A01, 51-42-13-001-001-A01, AND 51-92-21-001-001-A01 & INSTALL NEW SERVICEABLE FLOOR SILL IAW CRJ900 SRM 51-42-06-001-001-A01, 51-42-001-001-A01, 51-42-13-001-001-A01 AND 51-42-12-001-001-A01.