The single-seat prototype high-wing braced monoplane was built by Wilden and first flew 16 April 1975. Due to the interest raised by the prototype Wilden set about re-designing the type as a two-seater that would be capable of series production or in kit form for homebuilders. A new company Airconcept Flugzeug und Gerätebau GmbH was formed to produce and market the type. The prototype production two-seater first flew in 1978.
http://www.airconcept-enterprises.com/