A system, method, node, and computer program for determining a flight start policy to be applied to an unmanned aerial vehicle, UAV, (10) is described. The UAV (10) is associated with a first UAV-Application Server, UAV-AS (100) maintaining a flight policy applicable for the geographical service area (150) where the UAV (10) is located. The method comprising the first UAV-AS (100) determining whether the UAV (10) is going to leave the geographical service area (150) towards a second geographical service area (150), wherein the second geographical service area (150) is associated with a second UAV-AS (130). If so querying by the first UAV-AS (100) a flight policy applicable for the second geographical service area (150) from the second UAV-AS (130), and instructing a received flight policy applicable for the second geographical service to the UAV (10), before the UAV (10) has entered the second geographical service area (150).