The problem with especially this aiport is, that it was opened very late and during the last years, the ground layout got every year major changes. e.g. M5 and M6 have been added last year, while the aiport was still closed. When a dev makes such an aiport, he has to stop adding features/updates of the layout at a certain point of time, otherwise it would never got finished. Even knowing that it might be outdated a half year later. Another problem is the availabilty of data: Aerial pictures