Jet A*1 is a kerosine grade of fuel suitable for most turbine engined aircraft. It has a flash point minimum of *8 degrees C (**0°F) and a freeze point maximum of **7 degrees C. It is widely available outside the U.S.A. The main specifications for Jet A*1 grade (see below) are the UK specification DEF STAN ****1 (Jet A*1) Nato code F**5, (formerly DERD ***4) and the  specification D***5 ).

 

Jet A and Jet A*1 are kerosene-type fuels. The primary difference between the two is freeze point, the temperature at which wax crystals disappear in a laboratory test.



Jet A, which is mainly used in the United States, must have a freeze point of minus *0ºC or below and does not typically contain static dissipator additive. Jet A*1 must have a freeze point of minus *7ºC or below and for locations outside the United States, this fuel normally contains static dissipator additive. There are other key differences between the manufacturing specification within the United States and Europe/Africa/Middle East/Australasia.



ExxonMobil Jet A and ExxonMobil Jet A*1 meet the requirements of  D***5 Standard Specification for Aviation Turbine Fuels. ExxonMobil Jet A*1 also complies with U.K. DEF STAN *****1, and the JIG (Joint Inspection Group) Aviation Fuel Requirements for Jointly Operated Systems (Check List). Jet A*1 manufactured to Def. Stan. *****1 has a lower max limit for acidity and additional requirement for conductivity.  In all cases, the most recent issue of relevant specifications applies to the product supplied.