How much does an ALP container weigh and carry?

Tare weight is typically 160 to 185 kg depending on the manufacturer. The maximum gross weight is 3,176 kg (7,002 lb), leaving roughly 2,990 to 3,015 kg of payload.

What do ALP and LD11 mean?

ALP is the IATA three-letter ULD code: A for a certified container, L for the base size and P for the rectangular contour. LD11 is the older ATA name for the same container.

Which aircraft can carry an ALP?

The ALP is used on the lower deck of the Boeing 747, 777 and 787, the DC-10 and the MD-11. Confirm the container type with the operating airline, because lower-deck configurations differ.

What is the difference between an ALP and an ALF?

Both have a 3,175 × 1,534 mm base. The ALF (LD6) has angled sides and holds about 8.9 m³, while the ALP (LD11) is a rectangular box holding about 7.4 m³ with straight sides and a smaller overall width.

What is the ALP internal volume?

The ALP holds about 7.4 m³ (262 ft³) by the AS1825 method. Boeing quotes 7.2 m³ (256 ft³) using a different convention.

Why use an ALP instead of an ALF?

The ALP's straight sides give a wider usable floor and a simpler shape for boxed or crated cargo. The ALF's angled sides give more total volume, but its floor is narrower than its overall width.

ALP (LD11) ULD Dimensions

The rectangular full-width lower-deck container with no angled sides

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Base footprint

3.17m × 1.53m

Overall width

3.17m

Overall height

1.63m

Internal volume

7.4 m³

Max gross weight

3,175 kg

Tare weight

160 kg

Max payload

3,015 kg

Floor load limit

976 kg/m²

Door opening

3.05m × 1.55m

Deck

Lower deck

IATA code

ALP (LD11)

Values follow IATA ULD technical specifications. Some sources quote 7.2 m³ using Boeing's volume method.

ALP in practice: aircraft, contour and loading

Compatible aircraft

The ALP (LD11) is used on the lower deck of the Boeing 747, 777 and 787, the DC-10 and the MD-11, where the hold is wide enough for a rectangular container.

747777787DC-10MD-11

Typical use

The ALP carries large consolidated shipments and bulky cargo in the lower deck. Because it has no angled sides, its full width is usable at floor level, which suits wide pallets and crates.

Contour

The ALP is a plain box with a 3,175 × 1,534 mm base and the same width at the top. That gives more usable floor than an ALF of the same length, but it needs a hold wide enough for the full profile.

Loading limits

Maximum gross weight is 3,176 kg including the container. With a tare of roughly 160 to 185 kg, payload is about 2,990 to 3,015 kg. A centre post swings clear of the door for loading.

Compare ULD sizes Air Freight ULD Guide

ALP (LD11) — Frequently Asked Questions

The ALP has a rectangular base of about 3,175 × 1,534 mm (125 × 60.4 in) and an overall height of about 1,626 mm (64 in). The door opening is roughly 3,048 × 1,549 mm (120 × 61 in).

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