Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KA91DA found under by Nc3a The Hague Ric Manager. The National Stock Number assigned to this part is 5840005489070, and the Federal Supply Class is 5840 Radar Equipment Except Airborne. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like KA91DA.