Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F66-A found under Synchro Control Transformer by Mpc Products Corporation. The National Stock Number assigned to this part is 5990011784033, 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 F66-A.