Garmin GNC 420(A) Pilot's Manual & Reference page 190

SECTION 10
TERRAIN
Database Updates
Terrain/obstacle databases are updated periodically
with the latest terrain and obstacle data. Visit the Garmin
website to check for newer versions of terrain/obstacle
databases (compare database cycle numbers to determine
if a newer version is available). Updated terrain data cards
may be obtained by calling Garmin at one of the numbers
listed in the front of this document.
Updating terrain/obstacle databases:
1) Acquire a new terrain data card from
Garmin.
2) Turn off the power to the GNC 420.
3) Remove the old terrain data card from and
insert the new card into the right-most slot of
the GNC 420.
4) Turn on the GNC 420 and verify that the
TERRAIN system passes self-test.
10-10
Terrain/Obstacle Database Areas of Coverage
Table 10-5 lists the area of coverage available in each
database.
notice.
Database
Worldwide (WW)
United States (US)
US/Europe
* Indicates partial coverage
GNC 420(A) Pilot's Guide and Reference
Regional definitions may change without
Coverage Area
Latitudes: N75 to S60
Longitudes: W180 to E180
Limited to the United States plus
some areas of Canada, Mexico,
Caribbean, and the Pacific.
Alaska, Austria, Belgium, Canada*,
Caribbean*, Czech Republic,
Denmark, Estonia, Finland, France,
Germany, Greece, Hawaii, Iceland,
Ireland, Italy, Latvia, Lithuania,
Mexico*, Netherlands, Norway,
Poland, Portugal, Slovakia, Spain,
Sweden, Switzerland, United
Kingdom, United States
Table 10-5 Database Coverage Areas
190-00140-20 Rev. K