Apparently another variant of the 2350C or the Solo 2350C has recently developed a vibration problem in another aircraft type. DG has recently posted the following message regarding the delay in resolution of the current problem with the DG1000T Solo 2350C as follows: "The complexity of the whole problem is also reflected in the fact that a defective vibration behavior at the propeller shaft has also been found by another manufacturer, and also in this case, extensive tests and measurements are necessary". The full statement can be found @:
http://www.dg-flugzeugbau.de/index.p...5097dbe7ab3ed3
So you may want to make sure that this is not an issue with the Ventus CM. It is unclear from the DG post because the "another manufacturer" is not specified.

That said, I think it is hard to make an argument for reliability of the engine when 3 consecutive airworthiness directives by EASA and the FAA have emergently banned the use of the engine over 3 consecutive gliding seasons. In my opinion, the levity of propeller departure, either on the ground or in the air, should not be diminished by arguing that your engines have always started. That is not the point.

In fact our Solo 2350C has NEVER failed to start. The issue we have had with it is that it won't stop when the ignition is turned off. Our IA/A&P who is highly experienced, has not been able to solve the problem. Not stopping would not even be that serious of a problem but the engine has attempted to stow itself on multiple occasions, while still running. This is a recognized problem and resulted in DG service note No. 73-11 which states the following regarding a "run-on" situation: "If this happens the engine will retract further and propeller stopper will collide with the rotating propeller." Which it has. This is an unsavory situation either in flight or on the ground.