Low Level RPAS Traffic Management (LLRTM) Concept of Operation

What is it about?

Remotely Piloted Aircraft Systems (RPAS) applications at very low level, i.e. below 500 feet, appear to be a large part of the already existing market for these systems. However, their use is still limited by safety issues, one of these being the risk of RPA versus manned aircraft conflict and, to a lesser extent, of RPA versus RPA conflict. This paper presents a concept of operations for a Low Level RPAS Traffic Management (LLRTM) addressing these two types of conflict.

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Why is it important?

Potential conflicts between a RPA and a manned aircraft are detected by a ground system, and the conflict information is presented either to a RPAS traffic manager (RTM) or to the remote pilot in order to allow them to maneuver their RPAs to pass well clear of the manned aircraft. Regarding conflicts between RPAs, a structure of the low level airspace and a navigation principle are analysed to strategically lower the risk of encounters, whereas a vehicle to vehicle collision avoidance device is designed to avoid collision tactically.