One of the most important current debates in the field of sustainable aviation concerns alternative fuel for aircraft, which is a serious argument; However, the big question is whether efforts to produce more sustainable fuel to power planes are technically and ethically feasible. This article will investigate and show that there are currently no alternative fuels to power aircraft. The fuel used by the aircraft is fossil fuel, namely Jet A1. By burning this fuel, the researcher studies what is wrong with the fossil fuel (Jet A1). To solve the fuel problem, several alternatives have been tested, some of which are biofuels, liquid hydrogen, hydraulic fracturing for natural gas, and Scher-Tropsch (FT) fuels from fossil feedstocks. However, financing alternative fuel is sustainable. The first term is sustainability. There are many definitions of the word sustainable. White (2001, p. 1) asserts that sustainability seeks to provide the best outcomes for human and natural environments, now and into the indefinite future. Furthermore, Thompson and Sorvig (2009), in their recent research paper, found that probably the simplest and most widely used definition of sustainability is meeting the needs of the current population without diminishing the capacity of future populations. to meet their needs. On the other hand, Fresco and Kroonenberg (1992) assert that the sustainability of natural ecosystems is defined as the dynamic balance between natural inputs and outputs, modified by external events such as climate change and natural disasters. (Bell and Morse, 2008) the researcher of all research funds emphasized that sustainability linked to what is human and nature must be to try to have a balance between all aspects and all impacts on the nature...... middle of paper .... .. effective in the aviation industry such as biofuels, liquid hydrogen, hydraulic fracturing for natural gas and Scher-Tropsch (FT) fuels from raw materials first fossils. All fuel has been tested and some of them have been in use for a long time, but they all have an environmental and social impact, making the fuel unsustainable. Finally, with these fuels, CO2 emissions do not increase and LH2 releases about three times more water into the atmosphere than burning kerosene-type aviation fuel, which is water removed from the fuel. atmosphere much faster than carbon dioxide which remains in place for years. . Hydraulic fracturing squeezes water containing chemicals left underground to fill spaces in fractured rocks and can eventually flow into the local groundwater system, making it unfit for drinking. This research shows that there is no alternative fuel at present and at present..