3.1. Regulation (EC) No. 1137/2008 of 22 October 2008 adapting a number of instruments subject to the procedure laid down in Article 251 of the Treaty to Council Decision 1999/468/EC - European Air Law View the chapter 3.1. Regulation (EC) No. 1137/2008 of 22 October 2008 adapting a number of instruments subject to the procedure laid down in Article 251 of the Treaty to Council Decision 1999/468/EC by - European Air Law 3.1. Regulation (EC) No. 1137/2008 of 22 October 2008 adapting a number of instruments subject to the procedure laid down in Article 251 of the Treaty to Council Decision 1999/468/EC