36
Section 2
TERRAIN Operation
Section 2
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.