27. Commission Implementing Decision (EU) 2019/2168 of 17 December 2019 on the appointment of the chairperson and the members and their alternates of the Network Management Board and of the members and their alternates of the European Aviation Crisis Coordination Cell for the air traffic management network functions for the third reference period 2020-2024 - European Air Law (Update) View the chapter 27. Commission Implementing Decision (EU) 2019/2168 of 17 December 2019 on the appointment of the chairperson and the members and their alternates of the Network Management Board and of the members and their alternates of the European Aviation Crisis Coordination Cell for the air traffic management network functions for the third reference period 2020-2024 by - European Air Law (Update) 27. Commission Implementing Decision (EU) 2019/2168 of 17 December 2019 on the appointment of the chairperson and the members and their alternates of the Network Management Board and of the members and their alternates of the European Aviation Crisis Coordination Cell for the air traffic management network functions for the third reference period 2020-2024