關於「Ivao event」標籤，搜尋引擎有相關的訊息討論：

Division Policy - IVAO East Asia Regionxe.ivao.aero › division › policyEvent Categories and Event Types - IVAO Wikiwiki.ivao.aero › home › events › typeofeventsInternational Virtual Aviation Organisation - Wikipediaen.wikipedia.org › wiki › International_Virtual_Aviation_...IVA