Stockholm TMA handles traffic to Sweden’s two biggest airports movement wise: Stockholm Arlanda and Stockholm Bromma. The airports are located in close proximity to each other, meaning traffic in and out of the airports is likely to conflict, depending on the runway configurations. Stockholm TMA capacity will depend on how complex the traffic is, especially in the arrival sector (sector East), as well as weather, wind and other capacity factors. The thesis focuses on arriving traffic to Stockholm Arlanda. The number of arrivals for any given hour is restricted by a landing rate. The landing rate is set depending on a number of factors. For a high landing rate to be set, Stockholm Arlanda will need to be in traffic peak, utilizing one of the runway configurations used for hours of high traffic intensity. Why was a certain landing rate set? What were the main contributors? What was the outcome of the rate in terms of arrivals?