Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 20140-0351 found under Indicator Mach And True Air Spee by Aerosonic Corporation. The National Stock Number assigned to this part is 6610000065783, and the Federal Supply Class is 6610 Flight Instruments. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 20140-0351.