The increase in population and living standards has sparked to mobility of people. Therefore, mobility of the people who enhanced welfare causes a raising in travel activities. Such a demand growth results in the accumulation of the energy requirement. In parallel, leads to developing greenhouse gas (GHG) reduction strategies. To decrease the GHG in the aviation sector comes into prominence nowadays. Emissions from the aircrafts that using as the transportation medium are related to the fuel characteristics. In this sense, growing attention of using biokerosene instead of the fossil based kerosene is encountered in some air carriers. In this study, biodiesel produced via transesterification manner and obtained from waste frying oil was blended with fossil based kerosene in volumetrically (B60K40: 60% waste frying oil methyl ester and 40% fossil based kerosene). Then, 1000 ppm, 2000 ppm, 3000 ppm and 4000 ppm amount of 2-Ethylhexyl nitrate (2-EHN) cetane improver have been added to the biokerosene mixture of B60K40. These fuels have been scrutinized emission and engine parameters in 4 cylinder, 4 stroke, turbocharged, direct injection compression ignition (CI) engine with the volume of 3.908 liters and 17/1 compression ratio at full load at 1400, 1600, 1800, 2000, 2200, 2400 and 2600 rpm. In consequence of the present study, biokerosene fuel (B60K40) with additive 2-EHN improves the emissions.