As far as I know, all airliners have cargo bins forward and aft of the wing. That said, Twa@fra is correct in stating that the cargo doors on widebody aircraft do vary. Most of the 767's (non ER
) have small cargo doors fwd and aft that are just large enough for containers. Most (not all) of the 767ER models have a larger fwd cargo door in order to accommodate pallets. The larger cargo door is a customer option.
Most 777's I have seen and worked on have two cargo doors of roughly equal size which are large enough to load pallets. One exception are some of BA
's 777's which have a small aft cargo door for containers only. Again it is up to the customer.
On the Airbus aircraft I have seen, the A310 has a large fwd door only while the A330 and A340 usually have two large doors. The 747 I believe is only available with the larger doors.
If anyone has more info, let us know.
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