Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 17B9E3009-503 found under Light Navigational by Boeing Company The. The National Stock Number assigned to this part is 6220013827326, 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 17B9E3009-503.