JET A-1 Is an aviation fuel formerly known as "kerosene" which is suitable for most jet aircraft, and it is the principal fuel used for jet turbine engines. It is also used in general aviation for compatible diesel engine planes. It meets stringent international requirements, particularly those of the latest versions of the AFQRJOS, the British DEF STAN 91-91 standard, the ASTM D1655 standard, and the NATO F-35 specification. It has a minimum flashpoint of 38°C and a maximum freezing point of -47°C. JP 54 It is a powers gas turbine aircraft engines. Jet A and A-1 have specifications that can be used in fuel worldwide. Jet B is used in cold weather elements. Commonly a number of different mixtures make up jet fuel and this relates to flash points and how the carbon numbers are distributed. Actually most jet fuel exported from Russia etc. is “JP54” or “Colonial JP54”. It is similar to “Jet A” except the the Specific Energy is 18.4 mj/kg compared to that of 42.8 mj/kg.