Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 80-029-21A found under Insert Aircraft Mat by Transdigm Inc. The National Stock Number assigned to this part is 1680015622593, and the Federal Supply Class is 1680 Miscellaneous Aircraft Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 80-029-21A.