operationalization of norms in the sky-scanner Decision support system for aircraft approach and Departure*

The paper presents the SKY-Scanner DSS – a real-time decision support system for air traffic controllers. The system is based on the use of laser for aircraft tracking and assists the controllers in aircraft landing and takeoff. Decision support is based on the normative regulations that are currently applied to aircraft trajectories. The conformance alerting method is chosen. The SKY-Scanner DSS checks norm adherence and reports results in terms of violation risk. The focus of the paper is on representing norms in the system (operationalization). It is suggested to represent the norms for aircraft trajectories as risk definitions in the SKY-Scanner DSS. There are two types of norms – limit-based and deviation-based. A norm violation risk model tailored to the objectives of the SKY-Scanner DSS is defined. Norm violation risk is characterized by the risk factor (attribute of the aircraft trajectory), risk type, norm pattern, expected value and a set of thresholds. Risk evaluation maps the observed factor value into a discrete risk level. The presented examples use the traffic-light levels: green–yellow–red.