What is a NOTAM ? A NOTAM is a notice containing information essential to personnel concerned with flight operations but not known far enough in advance to be publicized by other means. It states the abnormal status of a component of the National Airspace System (NAS) – not the normal status. NOTAMs Definition NOTAM stands for Notice to Airmen (now also officially: Notice to Air Missions). It is an official message issued by aviation authorities to inform pilots and other aviation personnel about temporary or permanent changes to the aeronautical environment that could affect flight safety. First things first: What is a NOTAM ? A NOTAM is an official alert that provides real-time alerts about changes or hazards in the National Airspace System (NAS). A NOTAM is filed with an aviation authority to alert aircraft pilots of any hazards en route or at a specific location, or Flight Information Region. The authority, in turn, provides a means of disseminating relevant NOTAMs to pilots.
