With the proliferation of cheap flights, CO2 emissions from aviation – which currently account for around 3% of European carbon emissions – are rising rapidly and the EU fears that they could double over the next 20 years – undermining efforts made by other industrial sectors to fulfil Europe's Kyoto Protocol commitments.
The Commission feels that the best way to halt this evolution is to include aviation in the EU's emission-trading scheme (ETS) – a system that limits the amount of CO2 that planes can emit while allowing them to buy additional pollution allowances if they want to exceed them.
The system, it claims, could slow down the growth in greenhouse-gas emissions from air transport by 46% – or 183 tonnes – by 2020.
However, a number of leading European airlines, including Germany's Lufthansa, British Airways and Ryanair oppose the plan, which they say will distort competition, prevent the sector from developing and fail to lead to any significant reduction in emissions.
American airlines have also threatened to take legal action against the EU if it goes ahead with its plan to impose the system on foreign companies as of 2012.



