Brand of aviation engines that were built by "Aircraft Engineering & Accessory Development Co." in Pennsylvania. They were built around 1932.

-The "M" model gave 150 hp with eight air-cooled, horizontally-opposed cylinders. It had 511 cu. in. of total displacement.

-The "N" model gave 225 hp with 12 horizontally-opposed cylinders, and it had 811 cu. in. of total displacement.