&gt; Several such craft exist at the bigger end of the regional jet market.<p>In fact, there is about to be a veritable boom in that particular market. In addition to the Sukhoi Superjet 100, you have:<p>* The Bombardier CSeries (<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Bombardier_CSeries" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Bombardier_CSeries</a>)<p>* The Comac ARJ21 (<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Comac_ARJ21" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Comac_ARJ21</a>)<p>* The Irkut MC-21 (<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Irkut_MC-21" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Irkut_MC-21</a>)<p>* The Mitsubishi MRJ (<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Mitsubishi_Regional_Jet" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Mitsubishi_Regional_Jet</a>)<p>This is in addition to established offerings from Embraer and Bombardier (and some Airbus and Boeing at the very high end of the regional jet market with the A-318 and the smaller 737s). Each of these is more or less a clean-sheet design. The CSeries is already in flight testing.<p>Dornier was also trying to enter this market with a new design in the late 90s&#x2F;early 2000s with the 728 series (<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Fairchild_Dornier_728_family" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Fairchild_Dornier_728_family</a>), but they ran out of money.