Term commonly used when referring to containers, pallets and pallet nets. The purpose of the ULD is to enable individual pieces of cargo to be assembled into standardized units to ease the rapid loading and unloading of airplanes and to facilitate the transfer of cargo between airplanes have compatible handling and restraint systems.
Unit Load Devices, or ULDs, are pallets and containers used to load luggage, freight, and mail on wide-body aircraft and specific narrow-body aircraft. They allow large quantities of cargo to be bundled into large units. Since this leads to fewer units to load, it saves ground crews time and effort, and helps prevent delayed flights.