The target of this study is analyse the operational requirement of UAV/RPAS activities in special conditions

This study analyses and determines the operational requirements for unmanned aerial vehicles and remotely piloted aircrafts when operating in congested and hostile areas. In order to do so, a study of present regulatory framework from different countries is done and proposals published by regulating authorities from Europe and America as well, concluding this initial approach to unmanned aerial vehicle’s regulations with a benchmark of best practices. Afterwards, a risk analysis and a safe study are done by identifying potential risks, taking into account all possible situations and scenarios that can be produced during an operation in a congested area. Once the risks are adequately identified, an evaluation of them is performed, obtaining as a result a safety level which is acceptable or unacceptable in order to ensure the integrity of people on ground, and consequently developing the operation or not. Finally, for those operations associated to a risk that result in an unacceptable safety level, mitigation measures are proposed to reduce the likelihood of hazard happening and the severity of the consequences. It may be noted that these mitigation measures consist in adding technology to unmanned aircraft systems and establishing operational procedures.