Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 8663R215 found under Panel Structural by L 3 Communications Essco Inc. The National Stock Number assigned to this part is 5680013993728, and the Federal Supply Class is 5680 Miscellaneous Construction Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 8663R215.