34. Commission Implementing Decision (EU) 2025/635 of 31 March 2025 laying down rules for the application of Regulation (EU) 2024/2803 of the European Parliament and of the Council as regards the Performance Review Board of the Single European Sky - European Air Law (Update) View the chapter 34. Commission Implementing Decision (EU) 2025/635 of 31 March 2025 laying down rules for the application of Regulation (EU) 2024/2803 of the European Parliament and of the Council as regards the Performance Review Board of the Single European Sky by - European Air Law (Update) 34. Commission Implementing Decision (EU) 2025/635 of 31 March 2025 laying down rules for the application of Regulation (EU) 2024/2803 of the European Parliament and of the Council as regards the Performance Review Board of the Single European Sky