Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 71 050A4 found under Hose Air Bleed by Honeywell Aerospace. The National Stock Number assigned to this part is 4720001728613, and the Federal Supply Class is 4720 Hose And Flexible Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 71 050A4.