What is the NATO code for JP-4 fuel?

The NATO code for JP-4 fuel is indeed F-40. JP-4 is a type of aviation fuel that was widely used, particularly in military applications, due to its favorable properties for aircraft performance. The designation F-40 indicates this specific fuel type within NATO's fuel classification system, which categorizes fuels for easier identification and logistics among member nations.

Understanding the NATO coding system is crucial for ensuring that appropriate fuel is used for various aircraft, including their operational capabilities and compatibility. The other codes, while they correspond to different fuel types, do not represent JP-4, which solidifies F-40 as the correct choice for this question.