Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 58D17 found under Diffuser Air Aircraft Heating An by Rolls Royce Canada Ltd. The National Stock Number assigned to this part is 1660005223812, and the Federal Supply Class is 1660 Aircraft Air Conditioning Heating And Pressurizing Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 58D17.