Methods, apparatus and systems are disclosed. In one embodiment, a method, implemented by a UAS control entity includes the UAS control entity: receiving, from a USS/UTM, a monitoring request including information indicating a uncrewed/unmanned aerial vehicle (UAV) identifier to be monitored and one or more types of events the USS/UTM is subscribing to; subscribing with a network entity serving a UAV associated with the UAV identifier to be monitored based on the information indicating a type of event; receiving a published event report from the network entity, the publish event report including information indicating the UAV identifier, the event type and meta information related to an event; and sending the published event report received to the USS/UTM.