Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 74217 09 found under Gear Assy Pinion by Lucas Aerospace Power Equipment. The National Stock Number assigned to this part is 1680005102272, and the Federal Supply Class is 1680 Miscellaneous Aircraft Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 74217 09.