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In the two years after its first flight in 2007, the Ion prototype flew about 60 hours, some with a Jabiru 3300 six cylinder engine which experienced cooling problems but from May 2009 with a 100 hp (75 kW) Rotax 912ULS flat four engine.
:Later production variant with a 17 metre wingspan and a Limbach flat-four engine or can be retrofitted with a Rotax 914, hydraulically operated landing gear, double panel Schempp-Hirth type airbrakes on the upper wing surface.