Which situation requires advanced operations under CAR regulations?

When it comes to flying drones under Canadian Aviation Regulations (CAR), certain conditions require pilots to adhere to advanced operational rules to ensure safety and compliance. Flying in controlled airspace is one such situation because it involves navigating areas where air traffic is managed to prevent collisions and to accommodate manned aircraft operations.

Controlled airspace requires specific permissions and adherence to regulations that govern how and when unmanned aerial vehicles can operate within those limits. Pilots must demonstrate knowledge of airspace classification and potentially obtain permissions from air traffic control. This emphasizes the importance of understanding the environment in which the drone is operating, as there may be more aircraft activity and stricter rules for maintaining safe distances and altitudes.

Other options like flying a substantial distance from any airspace or conducting operations beyond visual line of sight do have their own requirements, but they do not necessarily encompass the same level of complexity or the immediate need for advanced permissions that controlled airspace operations do. Similarly, flying without visual observers has its risks, but it does not impose the same regulatory structure as operating in controlled airspace, where regulations are designed to manage interactions with other aircraft closely.