Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TC32400173-501 found under Nrp Control Unit As by L3 Services Llc. The National Stock Number assigned to this part is 1680016447166, 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 TC32400173-501.