Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 17B9E3028-502 found under Control Electric Light by Boeing Company The. The National Stock Number assigned to this part is 6220014322175, and the Federal Supply Class is 6220 Electric Vehicular Lights And Fixtures. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 17B9E3028-502.