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Considering the methods of loading cargo, which of the following answers is correct?
  • A
    Bulk cargo is secured onto unit load devices using nets.
  • B
    Pallets are used on smaller aircraft and must be strapped down to tie-down points.
  • C
    Compared to pallets, bulk cargo is quicker to load and requires fewer ground personnel.
  • D
    Containers lock directly into the aircraft’s restraint system and have their own manifest.

A unit load device (ULD) is a container used to load luggage, freight, and mail on wide-body aircraft and specific narrow-body aircraft. It allows a large quantity of cargo to be bundled into a single unit. Since this leads to fewer units to load, it saves ground crews time and effort and helps prevent delayed flights. Each ULD has its own packing list (or manifest) so that its contents can be tracked.

The most important purpose of a ULD is to secure cargo during flight. The safety of the plane and its passengers comes first every time.
ULD also allows:

  • eliminate the need for manual loading and unloading
  • protect cargo contents so that goods arrived undamaged
  • maximise the use of the aircraft’s cargo space
  • the fast and easy transfer of cargo between planes in transit

To prevent the ULDs moving around during flight and potentially damaging the aircraft, the plane has loading and restraint systems. These interface directly with a ULD, effectively locking the ULD into place so it becomes part of the aircraft.

Correct Answer: Container lock directly into the aircraft’s restraint system and have their own manifest.

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