1. Many pianos have been equipped with pneumatic systems ( Odeola, Welte ). 2. The undercarriage, flaps and brakes are operated hydraulically, with no pneumatic systems . 3. Fischertechnik offers a similar pneumatics system for robotic and control technology hobbyists. 4. Most of these repairs involved the electrical system, not the complicated pneumatic system . 5. Larger applications of HMA traditionally use pneumatic systems to supply adhesive. 6. Operations ceased on October 11, 1980 when a pneumatic system replaced the train. 7. At the end I lost air in the pneumatic system of the engine, 8. It is also the interface between electronic controllers and pneumatic systems . 9. As well, the pneumatic systems cause problems in very cold weather. 10. The technology became obsolete, as electrical interlocking or electro-pneumatic systems replaced mechanical interlocking.