Air Navigation Services (ANS) are critical for ensuring the safe and efficient movement of aircraft within airspace. These services include air traffic control (ATC), navigation services, communication systems, and surveillance of air traffic. ANS provides essential services for flight planning, real-time guidance, and monitoring, helping to minimize risks and improve flight efficiency. In Bhutan, the Bhutan Civil Aviation Authority (BCAA) oversees air navigation services, ensuring compliance with international aviation standards, such as those set by ICAO