Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 10 20239 503 found under Survival Kit Container Aircraft by Boeing Aircraft. The National Stock Number assigned to this part is 1680007415207, 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 10 20239 503.