Abstract
This research focuses on how to enhance the runway capacity for HANEDA Airport which is most congested in Japan. First, we propose a new method for calculating runway capacity corresponding to the flexible terminal flow control where the separation between two successive landing aircrafts is changed depending on the runway occupancy time of the leading aircraft. And the increased capacity by several air traffic control pattern was estimated for the runway configuration after re-expansion of HANEDA Airport by using the microscopic air traffic simulation. The simulation results shows the significant increase of airport capacity by more efficient and flexible air traffic control pattens.