What is the primary purpose of a NOTAM?

The primary purpose of a NOTAM (Notice to Airmen) is to notify pilots of changes in airport conditions, as well as important information that can affect their planned flight. This includes updates on runway conditions, taxiway status, navigational aids, airspace restrictions, and other hazards that may arise. Pilots rely on NOTAMs for safety and situational awareness, making it critical for them to be informed of any developments that could impact their flight operations.

Each NOTAM is time-sensitive and typically pertains to specific events, which is why this function is crucial for the planning and conduct of flights. The content of NOTAMs ensures that pilots have access to current and relevant information that aids in making informed decisions while flying. Other options, while relevant to aviation, don't encapsulate the primary function of NOTAMs as effectively as notifying pilots of airport and flight condition changes does.