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GPSMAP 495 Owner’s Manual
Aviation
Basic Operation in Aviation Mode > 
Following your Flight Plan
Following your Flight Plan
When you have created and started your flight plan (or route), the 
GPSMAP 495 guides you to the destination using a variety of tools.
  NOTE: After you perform an update to your Jeppesen database, 
verify that all of your flight plans (routes) in your unit are still 
current. If there is an obsolete Jeppesen aviation point in a saved 
route, the route is locked and unusable. You need to create a new 
route with current Jeppesen database points.
Track Your Progress on the Map Page
On the Map Page, your current location is shown as an airplane 
(when in Aviation Mode). You can see how the airplane moves 
across the map; this is a graphic view of your flight. Your route is 
marked with a magenta line. The airplane should be on top of the 
magenta line as you move. When you are on the magenta line, you 
are directly on course. For complete information about the Map 
Page and the features of the Map Page, see 
  NOTE: In Aviation (and Marine) Mode, the Go To line and 
navigation guidance are fixed. The From point is the location 
where the Go To was initiated. In Automotive Mode, the Go To 
line on the map is constantly updated to your present location. 
Terrain and Obstacle Changes
Press PAGE to open the Terrain Page, and watch the changes in the 
terrain and the obstacles you are flying over. Terrain and obstacles 
that are less than 100 feet from your aircraft are shown in red. For 
complete information, see 
.
View the HSI on the Panel Page
You can use the Panel Page to view the HSI, your bearing to the 
course, and other information such as speed, altitude, and ETA. Use 
the compass in the center of the page to determine if you are on the 
proper course. Also, you can help keep the aircraft within the VNAV 
profile when viewing the VNAV indicator. For complete information 
about the Panel Page, see 
.
Alerts
As you travel, a variety of alerts appear on your current page, such 
as Airspace, Terrain, Obstacle, and Descent Rate Alerts. When 
an Airspace Alert pops up, press NRST to view the Airspace 
Information. When a Terrain or Obstacle alert pops up, press
 
PAGE or NRST to open the Terrain Page. From here you can view 
any terrain and obstacles that might become a problem. Possible 
points-of-impact are shown as Xs. Adjust your altitude to avoid the 
obstacles and terrain.