Großbongardt talks to us about the German capital’s new airport and about the financial state of the air industry.DW-TV: We're joined by Heinrich Großbongardt, Aviation Industry Analyst. Hello! It would be interesting to know your take on this new Berlin airport. Will it be able to post profits? Heinrich Großbongardt: Perhaps in 8, 9, 10 years. Infrastructure projects like this always take many years to become profitable. And these times are really difficult, because airlines are cutting their networks, not looking for new destinations they could add.   DW-TV: That's right. You just mentioned times are difficult. The aviation industry as a whole is not exactly in great shape. Actually, the number of passangers dropped by 200 Million since 2007 while at the same time air fares have also dropped and as we can see here, down by some 20 percent in economy class down by 30 percent in business and first class. And Japan Airlines has just filed for insolvency. So is there any way how this downward spiral can be stopped? Heinrich Großbongardt: Fortunately the economy has bottomed out. We see some sort of growth, but not that much. After the last crisis we had double-digit growth, but that's something which won't happen this time. So airlines are looking to redefine their business models, to find new ways of earning money. To do things much more efficiently, to become more flexible. DW-TV: Like budget airlines, for example. Heinrich Großbongardt: They are looking for things they could adopt from the successful budget airlines. DW-TV: And why haven't they been doing it so far? Budget airlines have been quite successful for quite some time now. Why does Lufthansa, for example, not copy budget airlines? Heinrich Großbongardt: Copying doesn't work. You always have to find elements which you could integrate into your business model. And that's a difficult task of trial and error. DW-TV: So you would say that those big airlines like Lufthans...