In 2019, more than 70 million passengers used Incheon Airport in a single year, showing just how popular flying has become. While aviation is now a familiar technology to the public, drones and UAM still feel like something from the distant future. Conceptually, the main difference between conventional aircraft and drones is that drones are operated unmanned. Although this may seem like a minor difference, it leads to increased economic efficiency, allowing aviation technology to be used by the public for a much wider range of purposes than before. That’s why drones’ core strength is often called the 'Democratization of Flying.'