The Royal 912 was designed to comply with the Fédération Aéronautique Internationale microlight category, including the category's maximum gross weight of 4500NaN0. The aircraft has a maximum gross weight of 4500NaN0. It features a cable-braced hang glider-style high-wing, weight-shift controls, a two-seats-in-tandem open cockpit, tricycle landing gear with wheel pants and a single engine in pusher configuration.
The aircraft is made from bolted-together aluminum tubing, with its single surface wing covered in Dacron sailcloth. Its 10.481NaN1 span wing is supported by a single tube-type kingpost and uses an "A" frame weight-shift control bar. The powerplant is a four-cylinder, air and liquid-cooled, four-stroke, dual-ignition 800NaN0 Rotax 912 or 1000NaN0 Rotax 912S engine. The aircraft has an empty weight of 2300NaN0 and a gross weight of 4500NaN0, giving a useful load of 2200NaN0. With full fuel of the payload is 1800NaN0.
The aircraft carriage is manufactured under sub-contract in Slovenia. A number of different wings can be fitted to the basic carriage, but the standard wing is the Drachen Studio Kecur EOS 15 with a wing area of 15m2 and which is equipped with spoilers.