GNC 420(A) Pilot’s Guide and Reference
SECTION 3
NAV PAGES
3-7
190-00140-20 Rev. K
The ‘Setup Map?’ option (described in Section 3.4)
allows the pilot to define the maximum range at which
each map feature appears. This provides the pilot with
complete control to minimize screen clutter. The pilot
can also quickly remove items from the map using the
CLR
Key.
Quickly decluttering the Map Display:
Press the
CLR
Key momentarily (as needed) to
select the desired amount of map detail.
The
CLR
Key allows the pilot to quickly declutter the
Map Display, providing four levels of map detail. Note the
‘-2’ (‘-1’ and ‘-3’ are also provided) suffix designation in
Figure 3-10, indicating each successive
declutter level.
Map Detail Level
Figure 3-10 Detail Level on Map Page
The right-hand side of the Map Page includes four
user-selectable
data fields (Figure 3-8). By default, the
displayed data is: destination waypoint name (WPT),
desired
track (DTK), distance to destination waypoint
(DIS), and ground speed (GS). Any of these
data fields
may be changed to display a different data type, as
outlined in Section 3.4. The pilot may also remove the
four data fields from the map to show a larger map image,
as described in Section 3.4.
Map Panning
Another Map Page function is panning, which allows
the pilot to move the map beyond its current limits
without adjusting the
map range. When the panning
function is selected (by pressing the small
right
knob), a
target
pointer flashes on the Map Display (Figure 3-11).
A window also appears at the top of the Map Display
showing the latitude/longitude position of the pointer,
plus the bearing and distance to the pointer from the
present position.
Pointer Position
Window
Target Pointer
Figure 3-11 Panning on Map Page
Selecting and using the panning function to
pan the Map Display:
1) Press the small
right
knob to activate the
panning target pointer.
2) Turn the small
right
knob to move up (turn
clockwise) or down (counterclockwise).
3) Turn the large
right
knob to move right (turn
clockwise) or left (counterclockwise).
4) To cancel the panning function and return to
the present position, press the small
right
knob.
Summary of Contents for GNC 420
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