GM8 Article 3(4) U-space airspace
ED Decision 2022/022/R
U-SPACE AIRSPACE — FLIGHT AUTHORISATION DEVIATION THRESHOLDS
It is expected that the acceptable level of safety may be achieved by having UAS flight authorisation for 4D trajectories that do not intersect and contain their flights for 95 % of the time.
The UAS flight authorisation describes the flight trajectory as a series of one or more 4D volumes expressed in height (base, ceiling), longitudinal and lateral limits, and duration (entry and exit times). Each dimension includes the uncertainty of the flight, considering the UAS operational performance, and the assumptions on the operator proficiency and weather conditions.
It is recommended as best practice that these uncertainties be capped in the given probability of 95 %. The resulting deviation threshold defines an additional 4D volume around each planned 4D volume for a flight. The dimensions may be specified to balance the needs of safety with the efficient use of the airspace, and refine them over time for the U-space airspace under consideration based on the observed usage of the U-space airspace, the performance (and conformance) of the UAS flights in the airspace, and other factors.
Loading collections...