Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TPXA-F15-40 found under Sling Aircraft Maintenance by I And I Sling Inc. The National Stock Number assigned to this part is 1730015227606, 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 TPXA-F15-40.