## Notices to Airmen (NOTAMs) 

o Hydrography 

o Relief 

Notices to Airmen, or NOTAMs, are time-critical aeronautical information either temporary in nature or not sufficiently known in advance to permit publication on aeronautical charts or in other operational publications. The information receives immediate dissemination via the National Notice to Airmen (NOTAM) System. NOTAMs contain current notices to airmen that are considered essential to the safety of flight, as well as supplemental data affecting other operational publications. There are many different reasons that NOTAMs are issued. Following are some of those reasons: 

• Hazards, such as air shows, parachute jumps, kite flying, and rocket launches 

• Flights by important people such as heads of state 

• Inoperable lights on tall obstructions 

• Temporary erection of obstacles near airfields 

• Passage of flocks of birds through airspace (a NOTAM in this category is known as a BIRDTAM) 

NOTAMs are available in printed form through subscription from the Superintendent of Documents or online at PilotWeb, which provides access to current NOTAM information. Local airport NOTAMs can be obtained online from various websites. Some examples are www.fltplan.com and www.aopa.org/whatsnew/notams.html. Most sites require a free registration and acceptance of terms but offer pilots updated NOTAMs and TFRs. 

