Acronyms and Abbreviations
| aoc | Air Operator Certificate |
| ans | Air Navigation Service |
| ansp s | Air Navigation Service Providers |
| asat | Anti-Satellite (Weapon Test) |
| ast | Office of Commercial Space Transportation (United States) |
| atc | Air Traffic Control |
| atm | Air Traffic Management |
| BGBl | Bundesgesetzblatt (Austria) |
| bmk | Bundesministerium für Klimaschutz, Umwelt, Energie, Mobilität, Innovation und Technologie (Austria) |
| caa | Civil Aviation Authorisation (United Kingdom) |
| canso | Civil Air Navigation Services Organisation |
| cat | Commercial Air Transport |
| cfr | Code of Federal Regulations (United States) |
| cil | Customary International Law |
| cjeu | Court of Justice of the European Union |
| cnes | Centre National de la Recherche de l’Espace (France) |
| ConOps | Concept of Operations |
| csis | Centre for Strategic and International Studies |
| csl | Combined Single Limit |
| defis | Defence Industry and Space (Directorate-General of the |
| dlr | Deutsches Zentrum für Luft- und Raumfahrt (Germany) |
| easa | European Aviation Safety Agency |
| echo | European Concept for Higher Airspace Operation |
| ecsl | European Center for Space Law |
| ecss | European Cooperation for Space Standardisation |
| eia | Environmental Impact Assessment |
| esa | European Space Agency |
| espi | European Space Policy Institute |
| eurocontrol | European Organisation for the Safety of Air Navigation |
| faa | Federal Aviation Administration (United States) |
| far | Federal Air Regulation (United States) |
| fast20xx | Future High-Altitude high-Speed Transport 20XX ( |
| fl | Flight Level |
| ga | General Aviation |
| hao | Higher Airspace Operations |
| haosp | Higher Airspace Operation Service Provider |
| hap | High Altitude Platform |
| hav | High Altitude Vehicle |
| hotol | Horizontal Take-Off and Horizontal Landing |
| hst | Hubble Space Telescope |
| hthl | Horizontal Take-Off/Horizontal Landing |
| iaa | International Academy of Astronautics |
| iadc | Inter-Agency Space Debris Coordination Committee |
| icao | International Organization of Civil Aviation |
| icbm s | Inter-Continental Ballistic Missiles |
| icj | International Court of Justice |
| iga | Intergovernmental Agreement (of the iss) |
| iiasl | International Institute of Air and Space Law (The Netherlands) |
| iip | Instantaneous Impact Point |
| iisl | International Institute of Space Law |
| ila | International Law Association |
| ilc | International Law Commission |
| ilo | International Labour Organisation |
| iss | International Space Station |
| itu | International Telecommunications Union |
| ixv | Intermediate Experimental Vehicle |
| jaa | Joint Aviation Authorities (European Union) |
| jar s | Joint Aviation Requirements (European Union) |
| jaxa | Japan Aerospace Exploration Agency |
| leo | Low Earth Orbit |
| LiDAR | Light Detection and Ranging |
| lsc | Legal Subcommittee |
| lba | Luftfahrt-Bundesamt (Germany) |
| mcb | Multilateral Cooperation Board (of the iss) |
| meti | Ministry of Economy, Trade and Industry (Japan) |
| mlit | Ministry of Land, Infrastructure, Transport and Tourism (Japan) |
| mou | Memorandum of Understanding |
| mtom | Maximum Take-Off Mass |
| nasa | National Aeronautics and Space Administration (United States) |
| NextGen | Next Generation Air Transportation System |
| noaa | National Oceanic and Atmospheric Administration (United States) |
| ocst | Office of Commercial Space Transportation (United States) |
| oj | Official Journal of the |
| pcij | Permanent Court of International Justice |
| rcc | Reinforced Carbon–Carbon |
| sar | Synthetic Aperture Radar |
| sarp s | Standards and Recommended Practices |
| sjac | Society of the Japanese Aerospace Companies |
| snsa | Swedish National Space Agency |
| SoA | Suborbital Aeroplanes |
| srb | Solid Rocket Boosters |
| ssc | Swedish Space Corporation |
| ssme | Space Shuttle Main Engines |
| stm | Space Traffic Management |
| sts | Space Transportation System |
| tfeu | Treaty on the Functioning of the European Union |
| tpl | Third-Party Liability |
| tps | Thermal Protection System |
| uas | Unmanned Aircraft Systems |
| uaesa | United Arab Emirates Space Agency |
| uam | Urban Air Mobility |
| uas | Unmanned Aircraft Systems |
| uksa | |
United Nations | |
| unclos | United Nations Convention on the Law of the Sea |
| uncopuos | United Nations Committee on the Peaceful Uses of Outer Space |
| unga | United Nations General Assembly |
| unoosa | United Nations Office for Outer Space Affairs |
| unts | United Nations Treaty Series |
| usc | United States Code |
| utm | Unmanned Aircraft Systems Traffic Management |
| vthl | Vertical Take-Off/Horizontal Landing |
| vtvl | Vertical Take-Off/Vertical Landing |
| wrc | World Radiocommunication Conference |