Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 8909A551-002 found under Resistor Assembly by The Entwistle Company. The National Stock Number assigned to this part is 5905013702066, and the Federal Supply Class is 5905 Resistors. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 8909A551-002.