Which NOTAM type is typically used to disseminate information affecting all or multiple airports and aeronautical facilities?

• A. NOTAM L.
• B. NOTAM T.
• C. NOTAM A.
• D. NOTAM D.

Answer: (D)

Dissemination scope determines which NOTAM is used. When information could affect all or multiple airports and aeronautical facilities, it must be published in a way that reaches a wide audience through the national NOTAM system. This broad NOTAM travels beyond a single aerodrome and informs pilots that a change or condition could impact operations at many airports, so planners and crews can factor it into routes and schedules. Local NOTAMs, in contrast, cover a very limited area—usually just one airport or its immediate surroundings—so they don’t provide information relevant to other airports. Administrative NOTAMs deal with internal or procedural matters and are not about operational conditions at facilities. Hence, the type used for disseminating information affecting all or multiple airports is the broad, national scope NOTAM, designed to reach a wide audience of air operations.