Aviation fuels are specialized fuels designed for use in aircraft engines. The most common types are Jet A and Jet A-1, which are kerosene-based fuels used in commercial jet engines. These fuels are formulated to provide high energy content and stability at various temperatures, ensuring safe and efficient flight operations. Another type of aviation fuel is Avgas, primarily used in smaller piston-engine aircraft. Avgas is typically leaded, providing the necessary octane rating for these engines. Both types of aviation fuels undergo rigorous testing to meet safety and performance standards set by organizations like the Federal Aviation Administration (FAA).