Garmin GNS 430 Manuel d'utilisateur Page 36

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GNS 430(A) Pilot’s Guide and Reference
190-00140-00 Rev. P
SECTION 3
NAV PAGES
3-2
3.3 DEFAULT NAV PAGE
The rst 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.
Figure 3-3 Default NAV Page
Course Deviation
Indicator (CDI)
User-selectable
Data Fields
Active Leg of Flight Plan
TO/FROM Flag
Number of Pages in
Current Page Group
Position of
Current Page
within Current
Page Group
Current Page Group
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
dened 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 ight: 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).
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
ight plan, or the direct-to destination when using the
Direct-to Key. This automatically sequences to the next
leg of the ight plan as each interim waypoint is reached.
If no ight 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 ight plan or direct to:
Symbol Description
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
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