The Sonic 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 strut-braced hang glider-style high-wing, weight-shift controls, a two-seats-in-tandem open cockpit, tricycle landing gear and a single engine in pusher configuration.
The aircraft is made from square welded stainless steel tubing, with its double surface wing covered in Dacron sailcloth. Its 9.81NaN1 span Hazard 12 wing is supported by struts and uses an "A" frame weight-shift control bar. The powerplant is a four stroke turbocharged 850NaN0 Smart Car automotive conversion engine or, optionally, a twin cylinder, liquid-cooled, two-stroke, dual-ignition 640NaN0 Rotax 582 aircraft engine.
With the Smart car engine the Sonic has an empty weight of 1650NaN0 and a gross weight of 4500NaN0, giving a useful load of 2850NaN0. With full fuel of the payload is 2210NaN0.
The Sonic's trike structure is also incorporated in the Ramphos Trident amphibious trike.
