Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GSYNC 391-102-19 found under Generator Time Code by Fei Zyfer Inc. The National Stock Number assigned to this part is 6645015724475, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GSYNC 391-102-19.