Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MAA3-A2C112E-42M found under by Active Envrionmental Solutions. The National Stock Number assigned to this part is 6665016222646, 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 MAA3-A2C112E-42M.