The article discusses renewable aviation fuel, specifically bio-jet fuel, as a sustainable alternative to traditional fossil fuels in the aviation industry. Bio-jet fuels, derived from bioethanol and biodiesel, have the potential to reduce environmental impact and promote social responsibility. Jet A and Jet A-1 are commonly used jet fuels, with Jet B being used for cold-weather operations. The research highlights the importance of developing bio-jet fuels for gas-turbine engines in airplanes, emphasizing their potential to contribute to a more sustainable aviation industry.