Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 542-0-06-9 found under Cover Transport by Drs Mobile Environmental Systems Co. The National Stock Number assigned to this part is 2590015443016, and the Federal Supply Class is 2590 Miscellaneous Vehicular Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 542-0-06-9.