Modern aviation relies on advanced navigation systems that help pilots determine an aircraft’s position accurately, establish flight paths, and reach destinations safely and efficiently. Technological progress has enabled the transition from traditional navigation methods to integrated digital systems that combine satellites, sensors, and advanced computers, improving guidance accuracy and reducing dependence on manual procedures. The Global Positioning System (GPS) is one of the most prominent technologies used in air navigation. It relies on satellite signals to determine an aircraft’s position, speed, and time with a high degree of accuracy. This technology is integrated with Inertial Navigation Systems (INS), which use sensors to measure acceleration and angular rotation in order to calculate an aircraft’s position and orientation without continuously relying on external signals. Combining these systems improves the reliability of navigation information, particularly when satellite signals are weak or unavailable. Performance-Based Navigation (PBN) systems also play an important role in managing aircraft movements. They enable the definition of air routes and approach and landing procedures according to specific navigation performance requirements. These systems help reduce unnecessary flight distances, improve fuel efficiency, minimize delays, and increase airspace capacity. Modern communication and surveillance systems support these operations by facilitating data exchange between aircraft and air traffic control centers, allowing flights to be monitored and aircraft movements to be coordinated more efficiently. Despite the significant advantages of these technologies, their operation requires regular maintenance, accurate equipment calibration, and continuous training for pilots and engineers. Furthermore, reliance on digital systems requires measures to protect navigation data against electronic interference, signal jamming, and technical failures. Therefore, specialized organizations continue to develop backup systems and independent verification methods to ensure safe navigation under various operating conditions. The continuous development of air navigation systems represents a fundamental step toward a safer and more efficient future for the aviation industry. These technologies improve positioning accuracy, advance air traffic management, and reduce the environmental impact of flights. With further progress in satellite technology, artificial intelligence, and data analysis, navigation operations are expected to become more integrated and flexible, while safety and reliability remain the highest engineering priorities. Assist. Lecturer Al-Buraq Haider Mohsen