Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R143699-01 found under by Raytheon Company. The National Stock Number assigned to this part is 5821015473130, and the Federal Supply Class is 5821 Radio And Television Communication Equipment Airborne. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like R143699-01.