Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3911-55019 found under Resolver And Gearbo by Astrium Ltd. The National Stock Number assigned to this part is 5990995735095, and the Federal Supply Class is 5990 Synchros And Resolvers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3911-55019.