17.10. Commission Delegated Regulation (EU) 2024/405 of 30 January 2024 amending Regulation (EU) No. 139/2014 as regards the use of signals in case of radio communication failure - European Air Law (Update) View the chapter 17.10. Commission Delegated Regulation (EU) 2024/405 of 30 January 2024 amending Regulation (EU) No. 139/2014 as regards the use of signals in case of radio communication failure by - European Air Law (Update) 17.10. Commission Delegated Regulation (EU) 2024/405 of 30 January 2024 amending Regulation (EU) No. 139/2014 as regards the use of signals in case of radio communication failure