Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1623443-1 found under Synchro Control Transformer by Carleton Technologies Inc. The National Stock Number assigned to this part is 5990000090950, and the Federal Supply Class is 5990 Synchros And Resolvers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1623443-1.