The Advisory Council for Aeronautics Research (ACARE) proclaims that Europe leads the world in sustainable air transport products and services (EC, 2011a). Remaining competitive is a prerequisite for air transport in the EU and can only be achieved by operating in comparable environments worldwide. Future challenges for EU policy are to create international standards and instruments for sustainable air transport, such as international agreements on climate change mitigation,
minimum safety and security for airports, aircraft and crews worldwide, and efficient and immediate implementation of the Single European Sky.