Within the wider context of climate change and global decarbonization goals, the aviation sector is a significant source of various greenhouse gases and air pollutants. Aircraft engines emit not only carbon dioxide (CO₂), the main responsible for global warming, but also nitrogen oxides (NOx), sulphur oxides (SOx), unburned hydrocarbons, carbon monoxide (CO), particulate matter and water vapor. These emissions contribute not only to climate change but also to local air quality degradation, especially around airports. As the number of flights is expected to increase significantly by 2050, the need to reduce aviation’s polluting gas emissions becomes even more urgent. While Sustainable Aviation Fuels (SAF) represent one of the most promising options, other complementary solutions are also under development.