Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1568-2 found under Audio Unit by Avtech Tyee Inc. The National Stock Number assigned to this part is 6340012858471, and the Federal Supply Class is 6340 Aircraft Alarm And Signal Systems. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1568-2.