1. Four independent hydraulic systems power all flight controls and the built-in airstairs. 2. The Curtiss-Electric propeller and the complex hydraulic system had frequent maintenance problems. 3. This helps reduce weight and simplifies the aircraft's braking and hydraulic systems . 4. The grit also destroyed the planes'avionics and hydraulic systems , the officials said. 5. At that time, the car's brakes and steering run on electro-hydraulic systems . 6. Due to the freezing temperatures, the hydraulic system onboard develops a problem. 7. All hydraulic systems with hydraulic pressure accumulators have a corresponding control valve. 8. In Germany and Finland, diesel-hydraulic systems have achieved high reliability in operation. 9. The hitch lifting arms are powered by the tractor's own hydraulic system . 10. The hydraulic system continued to operate under municipal ownership until December 1967.
