TG-10 glider airplane model. The TG-10B is one of the world's most common initial soaring trainers. The LETECKÉ ZÁVODY Aircraft Corporation (LET) of Kunovice, Czech Republic manufactures the L-23 Super Blanik (Air Force designation TG-10B). It is an all-metal, two-seat, self-supporting, T-tail, high-winged glider with a retractable main wheel and a fixed tail wheel. The canopy is a one-piece design, allowing for excellent visibility. The tandem cockpit has dual flight controls. The radios and basic flight instruments are mounted in both cockpits. Advanced glide computer and a secure GPS Flight recorder are also maintained in each aircraft. Four sailplanes are configured for cross-country and wave flying. They are equipped with oxygen, electronic location transmitters (ELT's), and wing tip extensions for better glide performance.