Construction began near Frankfurt, Germany in January 1990 but was transferred to the Italian company Nike Aeronautica in the spring.
[1] It had 30° of sweep on the leading edges of its thick (thickness/chord ratio 20%), symmetric aerofoil, wings, built using carbon fibre and Kevlar with glassfibre for the spars.
Elevons controlled both pitch and roll; there was no vertical stabilizing surface, rudder or separate tailplane.
This was a deep steel tube structure starting about mid-chord and extending well behind the trailing edge, with a single seat open cockpit at the front and a 42 hp (31 kW) Rotax 447 two cylinder two-stroke engine in pusher mode behind.
The main wheels of the PUL 9's fixed tricycle undercarriage were also mounted on the steel frame, with the nosewheel attached near the leading edge.