Modern aircraft manufacturing is increasingly moving toward the use of composite materials in many components and structures because of their unique properties, which make them suitable alternatives to some traditional metals. This shift aims to improve aircraft performance, reduce weight, and increase operational efficiency while maintaining the required levels of strength, safety, and reliability. Composite materials, such as carbon-fiber- or glass-fiber-reinforced polymers, are lightweight compared with many metals while offering high strength-to-weight and stiffness-to-weight ratios. Reducing aircraft weight helps lower fuel consumption, improve operational efficiency, and reduce emissions generated during flights, supporting the development of more efficient and sustainable aviation. Composite materials also provide good resistance to corrosion and environmental conditions. Their properties and fiber orientations can be designed according to the loads and stresses experienced by different aircraft components. For this reason, they are used in important parts such as wings, fuselage sections, control surfaces, and other structural components. Although the use of composite materials requires specialized manufacturing, inspection, and maintenance techniques, their advantages in reducing weight, improving performance, and resisting corrosion have made them important materials in modern aviation. As composite manufacturing technologies continue to advance, their use is expected to expand further in the development of more efficient, safe, and sustainable aircraft. Lecturer Assistant Al-Boraq Hayder Mohsin