Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 405S331001907-1 found under Panel Fault Functio by L 3 Communications Mas Canada Inc. The National Stock Number assigned to this part is 1680014563755, 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 405S331001907-1.