5.2. Commission Implementing Regulation (EU) 2017/815 of 12 May 2017 amending Implementing Regulation (EU) 2015/1998 as regards clarification, harmonisation and simplification of certain specific aviation security measures - European Air Law View the chapter 5.2. Commission Implementing Regulation (EU) 2017/815 of 12 May 2017 amending Implementing Regulation (EU) 2015/1998 as regards clarification, harmonisation and simplification of certain specific aviation security measures by - European Air Law 5.2. Commission Implementing Regulation (EU) 2017/815 of 12 May 2017 amending Implementing Regulation (EU) 2015/1998 as regards clarification, harmonisation and simplification of certain specific aviation security measures