Cargo is loaded onto the aircraft in containers and pallets. These containers and pallets are also known as unit load devices (ULDs). You can learn more about the most popular ULDs from the following study
PALLETS AND TRANSPORT CONTAINERS
IATA ULD code: PGA/PGF Q6
General-purpose flat pallet for lower holds and main decks.
IATA ULD code: PGA/PGF Q7
General-purpose flat pallet for lower holds and main decks.
IATA ULD code: PMC Q6
General-purpose flat pallet for lower holds and main decks.
Dead weight: 120 kg (265 lbs)
Height and volume: H 243.8 cm (96 in), 17.0 m3 (600 ft3)
IATA ULD code: PMC Q7
General-purpose flat pallet for lower holds and main decks.
Dead weight: 120 kg (265 lbs)
Height: H 299.7 cm (118 inches), 21.2 m3 (750 ft3)
IATA ULD code: PZA Q6
General-purpose flat pallet for lower holds and main decks.
IATA ULD code: PYB Q7
General-purpose flat pallet for lower holds and main decks.
IATA code ULD: Container profiled AKE
Half-width lower hold container with one side angled. Canvas or solid doors.
Door opening: 58 x 61 inches (147 x 155 cm)
Maximum gross weight: 1588 cm (3500 lb)
Dead weight: 82 kg (181 lbs)
Volume AS1825: 4.5 m3 (159 ft3)
IATA ULD code: RKN refrigerated container
An insulated container half the width of the lower hold with one sloping end. The doors are solid. Most specimens have the option of fork opening.
Door opening: 54 x 55 inches (137 x 140 cm)
Maximum gross weight: 1588 cm (3500 lb)
Tare weight: 210 kg (463 lb)
IATA ULD code: HMA horsebox on P6P pallet base
P6P base with attached IATA-compliant horse boxes. Available with tarpaulin or full roof. Some more modified versions available with position for escort.
Maximum gross weight: 3,500 kg (7,716 lbs)
Unladen weight: 1,310 kg (2,888 lbs)
