AAAE
American Association of Airport Executives (www.aaae.org)
ACI
Airports Council International
AIA
Aerospace Industries Association
ASTM
American Society for Testing & Materials
ATA
American Transport Association - the industry association for American airlines. ATA and DESC formed the Strategic Alliance for Aviation Fuels.
ATJ
Alcohol to Jet fuel
ATM
Air Traffic Management
Biofuels
Liquid fuels derived from organic matter, or biomass.
Bio SPK
Synthetic Paraffinic kerosene from vegetable oils, also called HRJ
BTL
Biomass-To-Liquids
CAAFI
Commercial Aviation Alternative Fuel Initiative
Carbon
In the context of climate change “carbon” is often used interchangeably with carbon dioxide (CO2). CO2 (or CO2e where the “e” stands for equivalent) is often used as a proxy for a range of greenhouse gases.
CO2e
Greenhouse gas emissions in carbon dioxide equivalents (includes six Kyoto greenhouse gas groups)
CNS
Communications, Navigation, and Surveillance
CSF
The Commercial Spaceflight Federation (CSF) is the industry association of leading businesses and organizations working to make commercial human spaceflight a reality. It is USA based. (www.commercialspaceflight.org)
Drop in fuel
An alternative fuel that meets all the requirements of the current fossil fuel specification and does not require any modification to equipment or infrastructure
Energy crops
Defined here as woody crops or grasses grown for energy uses
EU ETS
European Union Emissions Trading Scheme
FAA
Federal Aviation Administration
Feedstock
A material used as a raw material in an industrial process.
FRJ
Fermented Renewable Jet
FT
Fischer-Tropsch synthesis, a step in a process from biomass, coal or gas to fuels
F-T SPK
FT-SPK (Fischer-Tröpsch Synthetic Paraffinic Kerosene) is made by gasifying (*you can think of gasifying as vaporizing) biomass using heat and controlled amounts of oxygen and steam and then using the F-T process to turn the vapors (called synthetic gas or ‘syngas’ consisting of carbon monoxide and hydrogen) into liquid fuels. The syngas is converted into a synthetic paraffinic wax via the Fischer-Tröpsch catalytic process. F-T is named after German chemists Franz Fischer (1877–1948) and Hans Tropsch (1889–1935). The process is most often used to create F-T diesel, a fuel for compression-ignition engines.
GBEP
Global Bioenergy Partnership - GBEP was created by the G8 in 2005. Its secretariat is housed at the UN Food and Agriculture Headquarters in Rome.
GIACC
Group on International Aviation and Climate Change formed within ICAO to address the inconsistency between the concept of “common but differentiated responsibilities” contained in the UNFCC, and the concept of non-discrimination contained in the Chicago Convention.
Gigaton
One gigaton is equal to one billion tonnes. In the context of this website, we are referring to one billion tonnes of carbon.
GHG Emissions
Greenhouse gas emissions.
HEFA
HEFA (hydroprocessed esters and fatty acids), sometimes also called HRJ (hydroprocessed renewable jet) are produced by “refining” natural oils much like petroleum is refined today.
HRJ
Hydroprocessed renewable jet fuel - a ‘drop-in’ aviation fuel produced by hydroprocessing a plant- or animal-based oil into a synthetic biobased fuel that is chemically identical to conventional petroleum-based jet fuel.
HVO
Hydrotreated Vegetable Oil - a road transport biofuel derived from vegetable oils
IATA
International Air Transport Association.  Announced fuel efficiency targets of 1.5% per year through 2020. Includes airlines, the manufacturers, air traffic controllers and airports.
ICAO
International Civil Aviation Organization - The Kyoto Protocol calls for aviation emissions to be limited and reduced via ICAO.
ILUC
Indirect Land Use Change
LCA
Life Cycle Analysis
LCI
Life Cycle Inventory
Lignocellulosic
Biomass material containing lignin and cellulose e.g. wood, straw, grasses
LUC
Land Use Change
NexGen
the Next Generation Air Transportation System - being developed in the US to improve CNS and ATM.
OEM
Original Equipment Manufacturer
Renewable Fuels
Fuels made from renewable resources.
RSB
Roundtable on Sustainable Biofuels - This is the principal international multi-stakeholder initiative to define sustainable biofuels and develop a 3rd party certification scheme.
SAFUG
Sustainable Aviation Fuel Users Group.

Members:
  • AeroMexico
  • Air France
  • Air New Zealand
  • Alaska Airlines
  • ANA
  • Avianca
  • British Airways
  • Cargolux
  • Cathay Pacific
  • Etihad Airways
  • GOL
  • Gulf Air
  • JAL
  • KLM
  • Lufthansa
  • Qantas
  • SAS
  • Singapore Airlines
  • TAM
  • TUI Fly
  • Virgin America
  • Virgin Atlantic
  • Virgin Australia

Affiliates:

  • AirBus
  • Boeing
  • Embraer
  • UOP
SESAR
Single European Sky ATM Research - being developed in Europe to improve CNS and ATM
SH
Synthetic Hydrocarbons - group of new routes from biomass to fuels
SPK
Synthetic Paraffinic Kerosene - includes fuels from FT and HRJ processes
SWAFEA - Sustainable Way for Alternative Fuels and Energy for Aviation
 (www.swafea.eu/)
SWAFEA is a study for the European Commission's Directorate General for Transport and Energy to investigate the feasibility
and the impact of the use of alternative fuels in aviation.

The SWAFEA team involves 20 European and international organisations, representing all players in alternative aviation fuels:
aircraft and engine manufacturing, air transport, oil industry, research and consulting organisations covering a large spectrum
of expertise in the fields of fuel, combustion, environment as well as agriculture.
Synthetic Biology
Synthetic biology is a young area of biological research that combines science and engineering to design and construct new biological functions and systems not found in nature.
Synthetic Fuel
Synthetic fuel, also referred to as “synfuel”, is a term that refers to fuels produced via biomass gasification and Fischer-Tröpsch synthesis (which is most often used to create F-T diesel, a fuel for compression-ignition engines or a kerosene replacement/blend stock).
TTW
Tank-to-Wake - emissions from burning fuel in aircraft
WTT
Well-to-Tank - emissions from fuel production
WTW
Well-to Wake - emissions from fuel production and use in aircraft
UNFCCC
United Nations Framework Convention on Climate Change