Reference

LD-29 Reefer

Insulated AAU with a solid door. The IATA code, rate class, weights, volume and aircraft fit are below.

LD-29 Reefer unit load device
IATA code
RAU contoured cool container on P1P base
Rate class
Type 5
Door size
300 x 152 cm (118 x 60 in)
Aircraft it fits
747 lower hold
Max gross weight
6,033 kg (13,300 lb)
Empty weight
450 kg (992 lb)
Inside volume
11.1 m³ (392 ft³)

How the LD-29 Reefer is used

The refrigerated LD-29: a contoured cool container on a P1P base, built to the RAU code.

It is the insulated counterpart of the dry AAU, with a solid door in place of canvas. Inside volume is 11.1 m³ and empty weight rises to 450 kg, the heaviest of the lower-hold reefers, on an unchanged six-tonne gross rating.

Cargo it usually takes

  • Pharmaceuticals
  • Perishable goods
  • Fresh produce
  • Seafood

How this family is arranged

  • A full-width insulated lower-hold unit angled at both ends, the refrigerated version of the dry AAU.
  • The door is solid. The dry version uses canvas.
  • Insulated panel walls, usually with a foam core, sit on a standard container base.
  • A solid door with a sealing gasket takes the place of the canvas curtain used on dry units.
  • Active units carry their own refrigeration, on battery or aircraft power. Passive units hold temperature with stored coolant.
  • Temperature is watched throughout. On an active unit the controller shows the setpoint next to the actual temperature.

Why operators pick it

  • It holds a temperature band for the whole journey, including the ramp and the wait on the ground, which is where an unprotected cold chain usually fails.
  • It uses the same aircraft positions and the same handling gear as the matching dry unit.
  • It is the usual choice for pharmaceuticals, vaccines and high-value perishables, where a temperature spike ruins the cargo.

Settle these points before you book

  • Insulation and machinery both take inside volume compared with the dry unit.
  • Empty weight is much higher, so the paying payload is lower.
  • An active unit needs power or a charge on the ground, and pre-cooling before the cargo goes in.
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