Jet fuel or aviation turbine fuel (ATF, also
abbreviated avtur) is a type of aviation fuel designed for use in
aircraft powered by gas-turbine engines. It is colorless to
straw-colored in appearance. The most commonly used fuels for
commercial aviation are Jet A and Jet A*1, which are produced to a
standardized international specification. The only other jet fuel
commonly used in civilian turbine-engine powered aviation is Jet B,
which is used for its enhanced cold-weather performance.
Jet fuel is a mixture of a variety of hydrocarbons. Because the
exact composition of jet fuel varies widely based on petroleum
source, it is impossible to define jet fuel as a ratio of specific
hydrocarbons. Jet fuel is therefore defined as a performance
specification rather than a chemical compound
