Abstract
With rising growth in air traffic globally, advanced technologies are being developed to aid ATCOs in the managing and control of a foreseeable denser airspace. The need to perform holding stack management, a potential challenge to ATCO, especially during heavy traffic congestion owing to weather and runway conditions is expected to be more frequent. To mitigate this challenge, the use of 3D displays was suggested. This paper examines the performance impacts resulting from the adoption of 3D instead of 2D radar displays with regards to visual search and relative vertical positioning identification. Observations relating perceived increased in stress and workload by the participants are also made.