![]() With the air transport industry developing dramatically, the problem of flight congestion in the terminal area (TMA) has been aggravated. Moreover, Case-4 could be a promising solution for sequencing aircraft conveniently in terms of a first come first service (FCFS) rule. The comparison results of equidistant and non-equidistant interspace show that the average reduction of 9,5 percent of total flight time 12,5 percent of total flight distance in favor of one of a non-equidistant interspace, which is Case-4. A scenario that includes four different cases was ideated and was resolved to discover the potential benefits and/or drawbacks of equidistant and non-equidistant interspace of waypoints. However, it does not seem possible to say that this tendency always gives the most appropriate and optimal results in terms of flight efficiency. In general, essentially equidistant waypoints are designed to facilitate the adaptation of airspace users (both pilots and air traffic controllers). Although it is not a general rule, it can be said that there is a tendency in practice to design the waypoints in the sequencing leg at equal distances from each other. This research uses the Base of Aircraft Data to analyze flight efficiency. This paper aims to propose a novel approach to the determination of waypoints position on sequencing leg for point merge system.
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