Which of the following is NOT a common type of aviation fuel?

Diesel is not a common type of aviation fuel primarily because it is not typically used in most aircraft engines. While some ground vehicles at airports and certain specialized aircraft may use diesel, the majority of aviation fuels are geared towards aircraft engines that have specific requirements for combustion efficiency and performance.

Kerosene is widely used in commercial jet engines as Jet A and Jet A-1 fuels, while AVGAS, or aviation gasoline, is specifically formulated for piston engine aircraft and is commonly used in smaller general aviation planes. Gasoline-kerosene blends exist but are less frequently encountered.

In contrast, diesel fuels have distinct characteristics that do not align with the combustion needs of either turbine or piston engines in aircraft. Thus, it is not categorized as a standard aviation fuel like the others listed.