The project aims to design and validate cross-border arrival management procedures using Optimised or Continuous Descent Operations (CDO) – where aircraft approach an airport according to a continuous vertical profile and in doing so reduce fuel consumption and noise. The project will conduct fast-time and real-time simulations and eight cross-border exercises, developing continuous descent profiles at the highest level possible for aircraft coming from both free route and conventional route airspaces into major aerodromes in Central Europe.