NOTAMs alert pilots to hazards en route or at a specific location and are filed with an aviation authority. Which statement best describes NOTAMs?

• A. Weather observations only
• B. Notices filed with an aviation authority
• C. Airport surface conditions
• D. Pilot training memos

Answer: (B)

NOTAMs provide time-sensitive information to pilots about hazards or changes that could affect flight safety, either along a route or at a specific location. They are notices filed with the appropriate aviation authority and distributed through official channels so pilots can plan accordingly. This makes them different from weather observations or forecasts, which describe current or predicted weather rather than operational changes. NOTAMs cover a range of conditions that impact safety, such as runway or taxiway closures, navigation aid outages, or temporary airspace restrictions, and they are issued for a defined duration and updated as conditions change.