Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HP11523 found under Parts Kit Actuator by Tactair Fluid Controls Inc. The National Stock Number assigned to this part is 1620004999515, and the Federal Supply Class is 1620 Aircraft Landing Gear Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HP11523.