A simple hydraulic system consists of a reservoir, a pump (either hand, electric, or engine-driven), a filter to keep the fluid clean, a selector valve to control the direction of flow, a relief valve to alleviate excess pressure, and an actuator.
System
Regarding comfort, the water and waste system is designed to provide water for galleys and lavatories. Fresh water is stored and distributed, while wastewater is dealt with by a separate system.
EGPWS Also known as the Enhanced Ground Proximity Warning System reduces the risk of controlled flight into the terrain by providing flight crews with timely, accurate information about terrain and obstacles in the area.
the New Distribution Capability is essentially an XML standard developed by the IATA in order to improve the shortcomings of the current airline distribution system and change how the air travel industry sells its products.