Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 42550-0000-0228 found under Microcircuit Memory by Thales Uk Ltd. The National Stock Number assigned to this part is 5962011775400, and the Federal Supply Class is 5962 Microcircuits Electronic. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 42550-0000-0228.