A drone (an aerial vehicle), able to maintain improved safety for operation by non-specialists, is provided. A farm field data stored in a cloud at take-off is compared to an environment data read by a sensor, and a control to prohibit take-off is performed if any danger is considered. In particular, it is desirable to prohibit if there is a traffic, where people and cars may pass, between the farm field and a current location, and if a direction of the drone, installed, does not point to a direction of an intrusion pathway to the target farm field. Furthermore, it is desirable to prohibit take-off if a predetermined maintenance is not performed by referring to a maintenance history.