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STANAG 4671 ("NATO Standardization Agreement 4671") is a technical and operational standard published by NATO that defines requirements for the airworthiness of fixed-wing unmanned aerial vehicles (UAVs) with a maximum takeoff weight exceeding 150 kg. Its primary objective is to ensure that military UAVs operate safely, controllably and in compliance with standards both nationally and internationally within airspace. The standard was developed based on the European Aviation Safety Agency’s (EASA

A primary source is a material that contains direct and original information about a studied period in historiography and social sciences. These sources are produced by witnesses or participants of events and constitute primary data sets related to occurrences of that time. In the academic world, primary sources are considered the foundation of historical analysis and contribute to the direct understanding of events. The analysis of primary sources enables researchers to process direct data rega