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  2. Airport apron - Wikipedia

    en.wikipedia.org/wiki/Airport_apron

    [1] [2] [3] Although the use of the apron is covered by regulations, such as lighting on vehicles, it is typically more accessible to users than the runway or taxiway. However, the apron is not usually open to the general public, and a permit may be required to gain access. An apron's designated areas for aircraft parking are called aircraft ...

  3. Level control valve - Wikipedia

    en.wikipedia.org/wiki/Level_control_valve

    A level control valve or altitude control valve is a type of valve that automatically responds to changes in the height of a liquid in some storage system. A common example is the set of ballcocks in a flush toilet , where each stage of the flush cycle is actuated by the emptying or filling of the tank.

  4. Ground support equipment - Wikipedia

    en.wikipedia.org/wiki/Ground_support_equipment

    Non-potable water trucks are special vehicles that provide water to an aircraft. The water is filtered and protected from the elements while being stored on the vehicle. A pump in the vehicle assists in moving the water from the truck to the aircraft. The water is designated as non-potable.

  5. Runway - Wikipedia

    en.wikipedia.org/wiki/Runway

    Runways, taxiways and ramps, are sometimes referred to as "tarmac", though very few runways are built using tarmac. Takeoff and landing areas defined on the surface of water for seaplanes are generally referred to as waterways. Runway lengths are now commonly given in meters worldwide, except in North America where feet are commonly used. [2]

  6. Asphalt concrete - Wikipedia

    en.wikipedia.org/wiki/Asphalt_concrete

    Asphalt batch mix plant A machine laying asphalt concrete, fed from a dump truck. Asphalt concrete (commonly called asphalt, [1] blacktop, or pavement in North America, and tarmac or bitumen macadam in the United Kingdom and the Republic of Ireland) is a composite material commonly used to surface roads, parking lots, airports, and the core of embankment dams. [2]

  7. Can airlines keep passengers on the tarmac for hours? Here’s ...

    www.aol.com/news/airlines-keep-passengers-tarmac...

    Tarmac delays can be one of the biggest headaches of air travel. A tarmac delay happens when an airplane that is awaiting takeoff or has just landed and passengers do not have an opportunity to ...

  8. Water level (device) - Wikipedia

    en.wikipedia.org/wiki/Water_level_(device)

    A water level device showing both ends at the same height. A water level (Greek: Aλφαδολάστιχο or (υδροστάθμη) [Alfadolasticho]) is a siphon utilizing two or more parts of the liquid water surface to establish a local horizontal line or plane of reference.

  9. Sluice - Wikipedia

    en.wikipedia.org/wiki/Sluice

    1: Tube connecting the chamber to the high water side of the sluice 2: Gates to regulate the water level in the chamber. Only one gate may be opened at a time 3: Tube connecting the chamber to the low water side of the sluice 4: The chamber in which the water level can be controlled 5: Door with larger surface 6: Door with smaller surface.