March 12, 2012. Airbus SAS and Europe's biggest airlines called on the European Union to find a compromise on aviation carbon curbs, warning that the EU emission limits on foreign carriers could lead to increased retaliation. The world's biggest maker of civil aircraft and eight airlines including Air France-KLM, Deutsche Lufthansa AG and British Airways urged European leaders to ''use their influence'' and push for a global agreement to tackle emissions from the industry and avoid an escalating trade conflict. At stake is the first expansion of the EU emissions trading system, or the ETS, beyond European borders. The bloc, which wants to lead the global fight against climate change, decided in 2008 that aviation should become as of 2012 a part of the ETS after airline carbon-dioxide discharges in the region doubled over two decades and international organizations failed to enact pollution curbs.