NOTAMs

NOTAM stands for Notice to Airmen (now also officially: Notice to Air Missions). It is an official message issued by aviation authorities to inform pilots and other aviation personnel about temporary or permanent changes to the aeronautical environment that could affect flight safety.

NOTAMs serve as essential briefings for pilots before and during a flight. They provide time-sensitive information that is not included in standard aeronautical publications like charts or the AIP (Aeronautical Information Publication).

A NOTAM can include, but is not limited to:

• Temporary runway closures
• New or revised airspace restrictions
• Changes to navigation aids (e.g., outages, modifications)
• Lighting failures
• Obstacle updates (e.g., new cranes, construction)
• Military exercises affecting civilian airspace
• Special events like airshows or emergency operations
• Temporary changes to ATC procedures

NOTAMs typically follow a standardized ICAO format with the following elements:

• NOTAM number and series
• Effective date/time
• End date/time (if known)
• Affected area or location (e.g., airport, airspace sector)
• Detailed description of the change or hazard
• Purpose code (e.g., RWY for runway, NAV for navigation)

• Pilots are required to check all applicable NOTAMs before flight.
• NOTAMs can be accessed via official aviation portals, AIP websites, or flight briefing services.
• In Austria, for example, NOTAMs are issued by Austro Control and published on the AIP Austria Online platform.

NOTAMs are usually written in highly compressed telegraphic language to save transmission bandwidth. Training is needed to read them fluently and interpret their operational relevance.