Aviation fuel is subject to strict specifications. Evaluation of the physicochemical properties of each component in the AF mixture and the blended AF is a complex and expensive but essential process. First, fuels often comprise diverse components with unique chemical properties, requiring a comprehensive analysis of the mixture (blend) and individual components. Next, the physicochemical properties encompass a wide array of characteristics, including net heat of combustion (NHOC), density at 15 • C, viscosity at -20 C, cetane number, and octane number . Evaluating these properties for individual components in the blended fuel adds complexity. In addition, the compounds in a blended fuel may interact, leading to synergistic or antagonistic effects on the properties of the fuel. Third, aviation industries have stringent standards and specifications for fuel quality and performance. To meet these standards, a blended AF requires thoroughly evaluating its physicochemical properties. Finally, obtaining precise and accurate measurements and analysis of the fuel properties needs advanced testing equipment and methodologies to ensure the reliability of results. All contribute to the overall complexity and cost of the process.