This document presents a new potential feature for the User Driven Prioritisation Process (UDPP) concept to give access and flexibility to Airspace Users (AUs) when they operate a low number of flights involved in a particular hotspot, a.k.a., Low Volume Users in Constraint (LVUC). Capacity constraints and congestion in the Air Traffic Management system impose delay to flights that cause large costs on airlines and passengers alike, with no significant capacity increases expected in the near-nor medium-term. Current UDPP features such as Enhanced Slot Swapping can increase flexibility for AUs to adapt their operations during capacity constrained situations. However, AUs are often impacted in their flight schedules by constraints that only affect a reduced number of flights, thus being in a situation of reduced flexibility—or no flexibility at all—to prioritise those flights. Some AUs are more vulnerable to this problem because they typically operate a low number of flights, e.g., business aviation. The new method proposed, named Flexible Credits for LVUC (FCL), is based on the use of “credits”, as a virtual currency, to increase the flexibility of LVUCs irrespective of the number of flights operated or affected by delay. FCL aims at facilitating the smooth coordination between AUs during the optimisation of their operations across multiple constraints and over the time. An initial set of simulations performed under credible conditions are presented to preliminarily analyse the feasibility and limitations of the method and to shed light on future research aspects. A first empirical evidence is given in this paper showing that increasing flexibility for LVUCs is possible without jeopardising equity.

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This paper discusses the need for a Performance Framework (PF) with a methodology to support the assessment of a European-wide concept in ATM.The article describes the work undertaken in Episode 3 (a European Commission Sixth Framework Programme research project) to develop a Performance Framework based on deliverables from the SESAR Definition Phase and associated Influence Models (IM) used to express the links between required performance and proposed improvements, including results from validation exercises.The Performance Framework includes the SESAR target performance, while the Influence Models are an extension of work started in SESAR to trace the relationship between Target Performance and the SESAR proposed concept.This article also covers the approach, illustrative assessments using the Performance Framework and Influence Models, and early lessons learned with an outline of future tasks.

The complexity and volumes of the projected future traffic require very demanding air traffic management systems and operations, and the perspective of continuing growth have triggered on both sides of the Atlantic initiatives to modernise the Air Traffic Management systems, namely NextGen in the USA and SESAR in Europe. The present European ATM infrastructure must be transformed. It must be propelled into the modern age, industrialised and developed into an integrated ATM Network facilitating the sustainable development of air transport, which will in turn contribute to a strong and sustainable growth of national economies, while enhancing safety and minimising environmental impact. This transformation requires the application of new operational concepts which fully exploit developments in information technology and airborne intelligence, integrated and implemented in a uniform and consistent manner. This chapter summarises the views of many European opinion leaders and actors of the industry captured in a recent study. It does not pretend to address these all in detail, but aims to provide the reader with insight into aspects where research is required, where issues must be confronted and resolved – where the industry’s challenges lie. Whilst the chapter addresses these challenges with a distinct European flavour, it is quite possible that many aspects will find sympathy elsewhere around our increasingly interdependent globe.

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