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Single European Sky

European Commission air traffic project

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Through Europe, European Union and Border

Single European Sky legislation was first enacted in two packages in 2004 and 2009. Those packages were replaced by Regulation (EU) 2018/1139 and Regulation (EU) 2024/2803, which established the European Union Aviation Safety Agency and implements the Single European Sky.

Background

Air traffic management in the European Union is currently undertaken by member states, co-operating through EUROCONTROL, an intergovernmental organisation that includes most European countries.

European air spaces are some of the busiest in the world, and the current system of air traffic management allegedly suffers from several parameters, such as using national borders in the sky, and having large areas of airspace reserved for national military use when in fact they may not be needed. This has created, 'an outdated patchwork of airspace blocs and inefficient flight paths [which] impose significant financial and environmental costs on the sector.' For example, airplanes are often forced to 'circle the skies burning fuel when traffic controllers go on strike or are at capacity'. On average, planes fly 49 kilometres (30.4 miles) longer than strictly necessary.

Advantages

The Single European Sky is hoped to benefit airspace users by ensuring the safe and efficient utilisation of airspace and the air traffic management system within and beyond the EU.

  • Airspace efficiency: Airspace management is planned to move away from the current domination by national borders to the use of 'functional airspace blocks' the boundaries of which will be designed to maximise the efficiency of the airspace.
  • Safety, capacity, management efficiency: Within the airspace, air traffic management, while continuing to have safety as its primary objective, will also be driven by the requirements of the airspace user and the need to provide for increasing air traffic. The aim is to use air traffic management that is more closely based on desired flight patterns leading to greater safety (by preventing congestion), efficiency and capacity. The SES aims to triple capacity, cut 10% in flight times, and halve cancellations and delays.
  • CO2 emissions and fuel cost cuts: According to the European Commission and the aviation industry itself, the SES could cut aviation's CO2 emissions by up to 10%, or 50 million tonnes. According to IATA, the SES would reduce airlines' annual fuel costs by 5.5 billion euros.
  • Crisis management: The SES would be able to manage transport disruptions (such as the 2010 Icelandic volcano eruption), overcrowding (as was happening in 2019), as well as collapses in air travel demand (as happened due to the COVID-19 pandemic in 2020).
  • Management cost reduction and job creation: The SES would require far fewer air traffic controllers, who have high salaries, thus substantially cutting personnel costs by about 50%; the number of control centres might be reduced from about 60 to about 20. Meanwhile, the development of Single European Sky ATM Research (SESAR) technology could create 328,000 jobs across Europe. By comparison, the 27 member states systems employed a little under 58,000 workers (including 16,900 air traffic controllers) in 2010.
  • Innovative coordination: The SES would stimulate coordination on innovation in areas such as sustainability.
  • Formation flying: The SES would enable formation flying, including Airbus' fello'fly project, which will save energy and benefit from an updraft.

Disadvantages

  • ATC job losses: The SES would threaten the jobs of many air traffic controllers, because fewer would be needed to manage a pan-European sky.
  • Security and sovereignty: Some EU member states, mostly larger ones, have expressed certain objections to relinquishing their current systems, primarily relating to national security and sovereignty concerns. For example, the SES could create problems concerning territorial sovereignty, such as over Gibraltar; Brexit seems to have removed this problem, however (see below).

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