15.2. Communication from the Commission extending the transitional period provided for in the Guidelines on State aid to airports and airlines concerning regional airports - European Air Law (Update) View the chapter 15.2. Communication from the Commission extending the transitional period provided for in the Guidelines on State aid to airports and airlines concerning regional airports by - European Air Law (Update) 15.2. Communication from the Commission extending the transitional period provided for in the Guidelines on State aid to airports and airlines concerning regional airports