Default Nav Page Info; Nav Page Symbols - Garmin GNS 430 Pilot's Manual & Reference

SECTION 3
NAV PAGES
3.3 DEFAULT NAV PAGE
The first NAV page is the Default NAV Page (Figure
3-3). This page may be quickly selected from any page by
pressing and holding the CLR Key.
Active Leg of Flight Plan
TO/FROM Flag
User-selectable
Data Fields
Current Page Group
Figure 3-3 Default NAV Page
The Default NAV Page displays a graphic course
deviation indicator (CDI) across the top of the page. Unlike
the angular limits used on a mechanical CDI coupled to
a VOR or ILS receiver, full scale limits for this CDI are
defined by a GPS-derived distance (0.3, 1.0 or 5.0 nm), as
indicated at both ends of the CDI. By default, the CDI scale
automatically adjusts to the desired limits based upon the
current phase of flight: enroute, terminal area or approach.
The pilot may also manually select the desired scale setting
as outlined in Section 10.4. The graphic CDI shows the
current position at the center of the indicator, relative to
the desired course (the moving course deviation needle).
As with a traditional mechanical CDI, when off course
simply steer toward the needle. The TO/FROM arrow in the
center of the scale indicates whether the aircraft is heading
TO (up arrow) or FROM the waypoint (down arrow).
3-2
Course Deviation
Indicator (CDI)
Position of
Current Page
within Current
Page Group
Number of Pages in
Current Page Group
GNS 430(A) Pilot's Guide and Reference
NOTE: The GNS 430 always navigates TO a
waypoint unless the OBS switch is set (preventing
automatic waypoint sequencing), or if the aircraft
has passed the last waypoint in the flight plan.
Directly below the CDI appears the active leg of the
flight plan, or the direct-to destination when using the
Direct-to Key. This automatically sequences to the next
leg of the flight plan as each interim waypoint is reached.
If no flight plan or direct-to destination has been selected,
the destination field remains blank.
The symbols in Table 3-2 are used on the Default NAV
Page (directly below the CDI), to depict the 'active leg' of
a flight plan or direct to:
Symbol
Direct-to a Waypoint
Course to a Waypoint, or Desired Course
between Two Waypoints
Procedure Turn
Procedure Turn
Vectors-to-Final
DME Arc to the Left
DME Arc to the Right
Left-hand Holding Pattern
Right-hand Holding Pattern
Table 3-2 NAV Page Symbols
Description
190-00140-00 Rev. P