Abstract
Most of the congested airports in the world limits the number of airport slots based on the runway capacity. Runway capacity is usually calculated by some statistical methods considering runway layout, aircraft fleet mix, observed runway occupancy time and so on. Another way is to use simulation method. In Japan, statistical method has been used and one of the assumption in the capacity calculation is that the aircrafts sequencing is statistically random. The sequencing of the aircrafts in terms of departure and arrival and wake turbulence category (heavy, medium, light) is well known to be important factor to change the runway capacity. Actually air traffic controllers may change the sequencing of the aircrafts to enhance the efficiency of the runway operation. Therefore the actual sequencing must be considered to some extent for calculating runway capacity (or slots). In this study, the actual sequencing of the aircrafts in Narita and Haneda airport in Japan are analyzed by using aircraft trajectory data which is open from the Japanese government, and we consider the appropriate assumption of aircraft sequencing in determining runway slots.
