They are not at all the same airplane. They were developed jointly and have some commonality but are very different in many ways In a message dated 4/27/2005 8:35:00 PM Central Daylight Time, damiross3@xxxxxxxxxxx writes: =>Why should A340 be underpowered with four engines when the A330 =>flies ok on =>two? They're the same airplane, aren't they? Not the same airplane. You have to take into consideration the difference in weight. It's the same