This work focuses on the physical/chemical standardized analyses and innovative detailed characterization of the properties and the unique composition of jet fuel and Diesel cuts obtained by DCL before and after hydroprocessing. It shows that 100 % high quality fully desulfurized Jet A, Jet A-1 or JP-8 aviation fuels can be obtained when using the appropriate hydrocracking conditions. It also shows that the Diesel cut obtained from the same upgrading process can be used as a high quality component for transportation fuels with less than 5 ppm sulfur, exhibiting a very specific chemical structure that is accompanied by excellent cold flow properties and good combustion characteristics. This innovative detailed characterization of hydroprocessed DCL jet fuel and Diesel cuts was provided using a GC ¡Á GC method developed within the IFP Energies nouvelles (IFPEN) laboratories.