There are no clear shortcomings with today's ATC-system (Air Traffic Control), but with tomorrows increasing air traffic situation there is a call for systems that are suited for a much higher load. The area has been researched since the 1990s, yet it is not until now that technology has enabled the development of a novel ATC-system. The information is planned to be presented in a 3D-interface, in contrast to today's system with a 2D-interface. This three folded study examined advantages and disadvantages with regard to both interfaces: a literature review, interviews with air traffic controllers, and an experimental study concerning perceptual differences between the two interfaces. The participants in the experimental study had no experience of ATC. The results indicated scepticism towards a 3D-interface and that that it takes more time to determine position and make decisions with the 3D-interface.