This paper presents a distributed application named AERIAL which allows coordination and control of multiple Unmanned Aerial Vehicles (UAVs) engaged in temporally constrained missions. This application combines multiagent paradigm and trajectory planning techniques and relies on a coordination model taking both deliberation and planning durations into account. Categories and Subject Descriptors I.2.11 [Artificial Intelligence]: Distributed Artificial Intelligence--Intelligent agents, Multiagent Systems General Terms Algorithms Keywords Multiagent Software Systems, UAV, Coordination, Trajectory planning