In order to pursue the activities of the International Association, the [General Assembly] may establish committees, advisory bodies and/or working groups, in accordance with Statues  Art. 16. A general outline of the activities of each committee has to be approved by the General Assembly before the activity is started. Participation of Members in committee activities is voluntary. Without prejudice to the participating Members’ rights, further terms of reference, rules of procedure and internal regulations for committee activities shall be adopted by the General Assembly.

The leaders of committees shall keep the Executive Board informed on the progress of work in their respective committee. All committees shall provide concise annual written reports of their activities to be submitted to the General Assembly. The Executive Board may invite committee leaders to report in person at a General Assembly meeting.

 Current ECATS Working Groups:

• [Alternative Fuels]: engine performance, airport air quality, atmospheric impact; Lead: Simon Blakey (USFD);
• [Climate Impact and Mitigation]; Lead: Sigrun Matthes (DLR);
• [Green Flight & Interdependency Modelling]; Lead: Volker Grewe (DLR/TUD);
• [Volcanic Ash] .