This document provides means of compliance of the function “Geo-awareness” specified in Parts 2 to 4 of the Commission Delegated Regulation (EU) 2019/945 of 12 March 2019 on unmanned aircraft intended for use in the “open” category, and on third-country operators of unmanned aircraft systems and its annex. The Geo-awareness is specified in Part 2 – articles (13) and (14) for Class 1 UASs, in Part 3 – articles (15) and (16) for Class 2 UASs and in Part 4 – articles (10) and (11) for Class 3 UASs. This document specifies the minimum performance expected from this Geo-awareness function, without prescribing its design and implementation as far as possible. Compliance with this document is recommended as one means of assuring that the Function will perform its intended sub-functions satisfactorily under all conditions normally encountered in routine aeronautical operation. NOTE In the rest of the document, we will use “Function” to mean the object of this specification, and equipment to identify the entity implementing this Function in whatever form.