Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 54017-1020 found under Tube Return Landing by Cef Industries Inc. The National Stock Number assigned to this part is 1620010113527, and the Federal Supply Class is 1620 Aircraft Landing Gear Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 54017-1020.