The Sirius programme was announced early in 2007 and an unflown prototype or mock-up appeared at Aero '07 that year.

The high wing has a constant chord centre section and tapered outer panels with downturned tips and is braced to the lower fuselage with a pair of forward-leaning lift struts.

The Sirius is fitted with a fixed tricycle undercarriage with mainwheels fuselage mounted on composite cantilever spring legs.

Twenty-two aircraft had been sold by September 2010 to customers in Angola, Australia, the Netherlands, New Zealand, Norway and the United States.

[4] Only four appeared on the European (Russia excluded) civil aircraft registers in mid-2010, three in the Czech Republic and one in Norway.