Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12021-1 found under Harness Personnel Parachute Seat by Pioneer Aerospace Corp. The National Stock Number assigned to this part is 1670016613928, and the Federal Supply Class is 1670 Parachutes Aerial Pick Up Delivery Recovery Systems And Cargo Tie Down Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 12021-1.