ULDs are unsung, yet vital, items in the transportation of luggage and freight, typically used in aviation. Rather than loading items in bulk, or loading individual items by hand, cargo or passenger baggage can be loaded onto a ULD container, which is then loaded on and off an aeroplane. The ULD not only means faster cargo and baggage handling, but its use also enables accurate planning of loads and weight distribution. ULD containers, constructed from aluminium to create a robust yet lightweight frame, typically feature ball transfer units, set into the floor to ease the loading and unloading of cargo and baggage. When loaded onto an aircraft, the ULDs are se- cured safely to maintain position during flight.
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