The A330-300 and A340-300 share the same fuselage and wings, however with the A340-300 featuring an extra bogie of landing gears under the belly, and powered by four engines instead of two.
Compatibility with the 757/767 family means that operators can gain better access to the demanding medium-size market (200-300 seats) by matching the appropriate airplane to variable requirements.
They can also improve operating efficiency through lower training requirements, greater flexibility in assigning flight crews, and reduced spares inventories.
[6] The new 767-400ER flight deck makes the airplane easier to maintain and provides flexibility for operators to tailor the flight-deck equipment to their training needs.
On the instrument panel, the most notable change on the 767-400ER is the use of six large liquid-crystal displays in the same arrangement as the Boeing 777 and Next-Generation 737 flight decks.