Aircraft encounter harsh weather conditions during flight that may affect their performance and safety. Among the most significant of these conditions are lightning strikes and ice accumulation on external surfaces. Modern aircraft are therefore designed according to precise engineering standards that enable them to deal with such conditions and minimize their effects during flight. Aircraft may be struck by lightning while passing through thunderstorms; however, their design helps protect the structure and internal systems. When lightning strikes an aircraft, the electrical current generally travels along the outer surface of the aircraft, while protection and grounding systems help direct the current away from sensitive components. Special materials and technologies are also used to reduce the effects of electrical fields and protect communication, navigation, and control systems. Ice is another major aviation hazard because it can accumulate on wings, leading edges, and engines when an aircraft flies through areas containing supercooled water droplets. Ice accumulation can alter the shape of the aerodynamic surfaces, increase drag, and reduce lift, which may affect aircraft performance. For this reason, aircraft are equipped with de-icing and anti-icing systems to remove or prevent ice accumulation. These systems may include electrical heating of certain components or the use of hot air extracted from the engines, along with other technologies depending on the type and design of the aircraft. Aircraft safety does not depend solely on the aircraft's design; it also involves weather forecasting and continuous monitoring of surrounding conditions. Pilots and flight operations personnel select appropriate routes and altitudes to avoid the most hazardous areas. In this way, engineering, modern technologies, and operational procedures work together to ensure that flights can continue with the highest possible levels of safety, even when challenging weather conditions are encountered. Asst. Lecturer Al-Boraq Hayder Mohsin