Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C3US143-3 found under Block Cushion Retra by Bombardier Aerospace. The National Stock Number assigned to this part is 1560006294551, 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 C3US143-3.