9.5 Commission Implementing Regulation (EU) 2021/666 of 22 April 2021 amending Regulation (EU) No. 923/2012 as regards requirements for manned aviation operating in U-space airspace - European Air Law (Update) View the chapter 9.5 Commission Implementing Regulation (EU) 2021/666 of 22 April 2021 amending Regulation (EU) No. 923/2012 as regards requirements for manned aviation operating in U-space airspace by - European Air Law (Update) 9.5 Commission Implementing Regulation (EU) 2021/666 of 22 April 2021 amending Regulation (EU) No. 923/2012 as regards requirements for manned aviation operating in U-space airspace