The term Unit Load Device (ULD) means any type of container with an integral pallet, or aircraft pallet whether or not owned by an IATA member, and whether or not considered to be aircraft equipped.
Aircraft ULDs
These are units that interface directly with an Aircraft loading and restraint system. They meet all normal restraint requirements without the use of supplementary equipment - providing they are loaded in accordance with the specific Aircraft Load and Balance Manual. Such units become an integral part of the Aircraft structure, when loaded and are typically Certified Aircraft Containers or Pallet and Net assemblies.
Note: The Aircraft Load and Balance Manual includes controls for-
The type, number and positions, that ULDs can be loaded.
Their allowable Max Gross Weights.
Acceptable alternate ULD loading arrangements such as:- Carriage of loads exceeding normal allowances or Load limitations with broken/missing restraint components.
These controls may effect direct interlining of ULDs between Aircraft Types. Aircraft ULDs may be loaned to shippers and agents for loading purposes provided they can prove that they are equipped and capable to handle them in accordance with the Aircraft Load and Balance Manual(s).
Non-Aircraft ULDs
These units do not interface with the aircraft restraint system. They must be registered with IATA and conform to IATA standard specifications. Non-aircraft ULDs, in order to be eligible for rating incentives, must be owned by a shipper or agent.
For information on the rules applicable to ULDs and full rating tables can be obtained from: The Air Cargo Tariff - TACT
The type, number and positions, that ULDs can be loaded.