Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CU679B506 found under Control Constant Frequency by Ambac International Corporation. The National Stock Number assigned to this part is 6110001951956, and the Federal Supply Class is 6110 Electrical Control Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CU679B506.