Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 17663-003 found under Switch Pow Steer On by Korry Electronics Co. The National Stock Number assigned to this part is 1560014721218, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 17663-003.