Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1809311-104 found under Duct Assembly Bleed by Senior Operations Llc. The National Stock Number assigned to this part is 1560014603277, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1809311-104.