Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GCSG505-A found under Amplifierelectronic Control by Alenia Aermacchi North America Inc. The National Stock Number assigned to this part is 5996016881416, 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 GCSG505-A.