An unmanned flight equipment according to an embodiment of the present invention includes: an aerial vehicle capable of flying in an unmanned manner; an abnormality recognition part-configured to recognize an abnormal situation in which a determination is made that it is difficult for the aerial vehicle to continue flight; and an alarm device held on the aerial vehicle and configured to be detached from the aerial vehicle and to warn neighborhood of abnormality when the abnormality recognition part recognizes the abnormal situation.