Garmin GPS 400 Pilot's Manual And Reference page 26

1 5
PROCEDURES
NAV PAGES
Approach Examples
Default NAV Page
The following symbols are used—on the
default NAV page directly below the CDI—to
depict the "active leg" of a flight plan or
direct-to:
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
Default NAV Page
User-
selectable
Data Fields
The first NAV page is the default NAV page. This page may be quickly selected
c
from ANY page by using the
To select the NAV group and display the default NAV page, press and hold
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 will automatically adjust to the desired limits based upon the
current phase of flight: en route, terminal area or approach. You may also manually
select the desired scale setting as outlined on pages 127-129.
The graphic CDI shows your position at the center of the indicator, relative to
the desired course (the moving course deviation needle). As with a traditional
mechanical CDI, when you're off course simply steer toward the needle. The
TO/FROM arrow in the center of the scale indicates whether you are heading to
(an up arrow) the waypoint or if you have passed the waypoint (a down arrow).
The GPS 400 always navigates TO a waypoint unless the OBS
switch is set (preventing automatic waypoint sequencing), or you
have passed the last waypoint in your flight plan.
Course Deviation Indicator (CDI)
key.
Active Leg of
Flight Plan
First Page
in NAV group
c
.