What is the purpose of a NOTAM?

The purpose of a NOTAM (Notice to Airmen) is fundamentally to provide important information regarding changes or hazards affecting airports and navigable airspace. NOTAMs are issued to alert pilots and other aviation personnel about conditions that could adversely affect flight operations, such as runway closures, construction, or obstructions in the vicinity of an airport. This information is crucial for ensuring safety and operational awareness in aviation.

While NOTAMs can include information about temporary flight restrictions (TFRs) and, occasionally, weather conditions, their primary focus is on notifying stakeholders about significant changes or hazards that could impact flight safety. Therefore, the option highlighting the notification of airport changes or hazards accurately reflects the core purpose of a NOTAM.