27.21. Commission Implementing Regulation (EU) No. 659/2013 of 10 July 2013 - European Air Law View the chapter 27.21. Commission Implementing Regulation (EU) No. 659/2013 of 10 July 2013 by - European Air Law 27.21. Commission Implementing Regulation (EU) No. 659/2013 of 10 July 2013