14.18. Commission Implementing Regulation (EU) 2021/2237 of 15 December 2021 amending Regulation (EU) No. 965/2012 as regards the requirements for all-weather operations and for flight crew training and checking - European Air Law (Update) View the chapter 14.18. Commission Implementing Regulation (EU) 2021/2237 of 15 December 2021 amending Regulation (EU) No. 965/2012 as regards the requirements for all-weather operations and for flight crew training and checking by - European Air Law (Update) 14.18. Commission Implementing Regulation (EU) 2021/2237 of 15 December 2021 amending Regulation (EU) No. 965/2012 as regards the requirements for all-weather operations and for flight crew training and checking