The article analyzes the problem of possible threats with the use of aircraft captured by terrorists or controlled unmanned aerial vehicles in relation to nuclear energy use facilities. In the context of preventing acts of nuclear terrorism, the urgent task is to protect nuclear facilities from deliberate attacks by civilian airliners operated by terrorists. On the basis of the materials of publications, the influence of external extreme loads acting on the design of nuclear power plants, their features during the fall of aircraft of different types is studied. As a conclusion, the author notes that improving the safety of nuclear power plants and other radiation-hazardous facilities, minimizing possible consequences from aircraft strikes are important areas in risk management and their protection from acts of nuclear terrorism by combining organizational measures to combat terrorism and nuclear security measures.