This was an aircraft of mixed construction, including wood, composites and steel components with fabric covering.

UL-Jih fabricated these models and claimed sole production and marketing rights both to the D.4 and D.5 when WD Flugzeugliechtbau ceased trading in 2005, though those rights are challenged by Swiss Light Aircraft AG, who build their versions.

The fuselage becomes slender towards the tail, where the trapezoidal tailplane is set at mid-height, the elevators having a small cutout for rudder movement.

[5] It was reported that Fascination-airplanes (various versions) were flying in countries as remote as Brazil, Australia, and the Philippines.

The Website Aviation Safety Network [6] shows 15 crashes of the type involving 18 fatalities since 1997.