Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6991ED27-A1A1 found under Electronic Module S by Drs Power And Control Technologies. The National Stock Number assigned to this part is 5963015284718, and the Federal Supply Class is 5963 Electronic Modules. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 6991ED27-A1A1.