What is the altitude range where UARs operate?

Answer: C — Above FL245

Unmanned Aerial Routes (UARs) are specifically designated airspace routes intended for the operation of unmanned aircraft systems in a controlled airspace environment. The correct range for UARs is typically established as being above FL245 (Flight Level 245), which is approximately 24,500 feet above sea level. This operational altitude helps ensure that unmanned aerial vehicles can avoid most of the manned aircraft traffic, which primarily operates at lower altitudes. The allocation of UARs at this altitude also takes into consideration factors such as airspace congestion, safety, and separation from other air traffic. By utilizing airspace above FL245, unmanned systems can operate effectively while minimizing the risk of conflicts with commercial and general aviation traffic, which generally operates between ground level and approximately FL240 or lower. UARs are an essential component of modern airspace management, especially as the use of drones expands. Their placement at higher altitudes reflects the need for structured air traffic operations that accommodate various types of aircraft, ensuring safety and efficiency in the skies.