people who'd be sad to see the end of an aircraft widely regarded as a feat of engineering natascha al-jazeera to lose france or to why it is an aviation consultant and director at cowen aviation consultancy joins us now from hamburg thanks for being with us so. it's there's no doubt that the a three eighty was very popular with air travelers wasn't it but it was just felt that it wasn't economically viable anymore certainly from the point of view of the airlines why is that. i think most allies simply operate the aircraft lot and that way how it was intended to be used so if you take for example emirates. and four hundred fifty five hundred people but to sacrifice those up to eight hundred fifty people and that was the biggest advantage so transporting people on the seven four to seven and that was an economic point if you will so that you can transport people at about the same cost which in the end though it's a cost proceed. and we had a very frank admission there from the air bus c.e.o. in natasha's report saying this this whole thing may have been ten years too late do you think that's tr