Notam meaning: A NOTAM is filed

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. A NOTAM is a message issued by civil aviation authorities that contains essential information for air navigation. This information may include temporary changes to facilities, services, procedures, regulations and other aspects relevant to flight operations. NOTAMs are designed to keep pilots and other flight personnel informed of current conditions in real time, thereby contributing to the safety of all airspace users. NOTAMs are bulletins issued by aviation authorities to alert pilots to changes or hazards that affect flight operations. Learn how to read and understand NOTAMs in different formats, and where to find them before flight. 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).