This has been a very informative discussion. A big thank you to all of you who have contributed, especially Ual747 for posting the topic to begin with.
>he tells me the A330 has no Ctr fuel tank
So the next question, what's the possibility/feasibility that Airbus will open up the wing box to fuel, thereby creating a two-engined replacement for the A342/3, leaving the A345/6 for ultra-long range flights? IMO, the A330 is the best plane Airbus produces, and an extended-range A330 would better compete against the 777 than the A343.
Thanks again for the informative postings
Honor the warriors, not the war.