The European Commission would like to draw your attention to three vacant positions in the Performance Review Body (PRB). By Commission Implementing Decision (EU) 2016/2296 setting up the independent group of experts designated as Performance Review Body of the single European sky, the European Commission has set up a group to help it implement the Single European Sky's performance and charging scheme by providing independent advice and expertise. This group is designated as the 'Performance Review Body of the Single European Sky', in accordance with Article 11(2) of Regulation (EC) No 549/2004. The Single European Sky performance scheme is a mechanism for regulating the performance and economic aspects of monopoly providers of air navigation services.