In which type of airspace is RPA operation generally restricted without special permissions?

RPA (Remotely Piloted Aircraft) operations are typically restricted in Class C and Class D airspace without special permissions due to the increased density of manned aircraft activity in these areas. Class C airspace surrounds airports with a significant number of commercial flights, and Class D airspace typically involves airports with control towers but less traffic than Class C. In these airspaces, communications with air traffic control (ATC) are essential to ensure the safe integration of RPAs with manned aircraft.

The requirement for special permissions in these airspaces is aimed at maintaining safety in crowded airspace environments where there is a higher risk of collisions. Operators of RPAs must obtain clearance and follow ATC instructions to mitigate the risks associated with potential conflicts with other aircraft that are typically operating in these controlled environments.

Controlled airspace, which includes Class C and D airspace, is designed to help manage air traffic effectively, and the restrictions placed on RPA operations help ensure adherence to safety protocols that protect both piloted aircraft and unmanned systems. Uncontrolled airspace, on the other hand, does not have such stringent requirements, as it generally encompasses less congested areas with fewer manned flights. Transitional airspace, while it may have its own