Garmin 400-500 User Manual

36

Terrain/Obstacle Database Areas of Coverage

The following describes the area of coverage available in each database.  Regional definitions may 

change without notice.

CAUTION:  Obstacles 200’ and higher are included in the Obstacle Database.  It is very 
important to note that not all obstacles are necessarily charted and therefore may not be 
contained in the Obstacle Database.

Navigation Database

As explained in the “Premature Descent Alerting (PDA)” section (page 40), the Garmin TERRAIN pre-

mature descent alerting (PDA) algorithms utilize data contained in the Navigation Database. It is therefore 
important to also have the latest Navigation Database installed to ensure correct TERRAIN alerting.



Worldwide (WW):   
Latitudes:  S60 to N75 
Longitudes: W180 to E180

Americas (AME):   
Latitudes:  S60 to N75 
Longitudes: W180 to W30

Atlantic (ATL):   
Latitudes:  S60 to N75 
Longitudes: W30 to E90

Pacific (PAC): 
Latitudes:  S60 to N75 
Longitudes: E60 to E180

United States (US):  
Limited to the United States plus some areas of 
Canada, Mexico, Caribbean, and the Pacific.