Small Air Transport (SAT) is emerging as the most suitable transportation means in order to allow efficient travel over a regional range, in particular for commuters, based on the use of small airports. The vehicles that are comprised under the SAT domain are usually fixed wing aircraft with 5 to 19 seats or similar cargo vehicles, belonging to the EASA CS-23 category. In order to ease the growth of the SAT business domain, the availability of new technological solutions allowing reducing the related operative costs represents a challenge of capital importance. The project COAST (Cost Optimized Avionics SysTem), started in the year 2016 and funded by the Clean Sky 2 Joint Undertaking in the European Union's Horizon 2020 research and innovation programme under grant agreement No CS2-SYS-ITD-GAM-2004-2015-01, aims to tackle this challenge and to deliver key technology enablers for the affordable cockpit and avionics, while also enabling the single pilot operations for small aircraft. Among all the technological challenges addressed in the project, some selected ones are outlined in this paper, namely the ones of traffic situational awareness, traffic separation, meteorological awareness and pilot or platform emergency management. The paper, therefore, focuses on a selected cluster, from the overall framework of the COAST project, of SAT single pilot operations enabling technologies: Traffic Awareness System (TAS), Tactical Separation System (TSS), Flight Reconfiguration System (FRS), and Advanced Weather Awareness System (AWAS). In the paper, a description is first reported of the overall COAST project approach to the SAT vehicles cockpit design, by providing an overview of the considered architecture, and, then, the description of each of the above-indicated selected technologies is presented (the additional technologies considered in the COAST project are out of the scope of this paper). Based on that, for each of the considered systems (TAS, TSS, FRS, AWAS) the logical architecture is described and the related technical innovation aspects are outlined.
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