51.   Atlantis sprang the leak in one of three identical hydraulic systems, which control the landing gear, rudder and wing flaps.

52.   Bullets ripped into the hydraulic system of one of the helicopters, setting an oil light flashing and forcing its pilot to make an emergency landing by a riverbank.

53.   Bullets ripped into the hydraulic system of one of helicopters, setting an oil light flashing and forcing its pilot to make an emergency landing by a riverbank.

54.   Citroen strength is in its hatchbacks and hydraulic systems, while Peugeot has more of a saloon in Malaysia.

55.   Computer-controlled adaptive hydraulic damping system.

56.   Critical hydraulic system fails on space shuttle.

57.   Flight managers, extra cautious because of a leaky shuttle hydraulic system, had been waiting for near-perfect weather before allowing Atlantis to land.

58.   In the North Carolina crash, Berndt said investigators found the hydraulic system began to malfunction after the plane made a series of left-hand turns.

59.   Officials said no one was at fault but recommended a complete review of the software and possible redesign of the hydraulic system that powers flight controls.

60.   Shuttle operations director Bob Sieck said technicians apparently left a valve to the hydraulic system open while replacing an engine fuel valve last weekend.