In November 2006, HPH conducted the maiden flight of the completely new 18 metre 304 S Shark. The 304 S Shark features an all new wing design using the HpH xn2 profile with the airfoil only 13.2% of the cord thickness (16.4% at the root). The 18 metre wing yields a best glide of 51:1 and minimum sink of 0.44 m/s (0.85 kt). The new Safety Cockpit uses a Carbon/Kevlar safety shell that meets the latest EASA Safety Standards. The 304 S is larger than the 304 C and while interchangeable wing extensions are available for 15-metre or 18-metre span, the most common configuration is the 18-metre version.