Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Y63-315880-202 found under Sling Aircraft Maintenance by Gyrodyne Co Of America Inc. The National Stock Number assigned to this part is 1730000732625, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like Y63-315880-202.