Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5R9-1227-X50N11 found under Filter Notch by Reactelinc. The National Stock Number assigned to this part is 5915016428040, and the Federal Supply Class is 5915 Filters And Networks. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5R9-1227-X50N11.