Garmin GNC 420, Pilot'S Manual & Reference

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GNC 420(A) Pilot’s Guide and Reference
4-1
SECTION 4
DIRECT-TO NAVIGATION
190-00140-20 Rev. K
SECTION 4: DIRECT-TO
NAVIGATION
4.1 OVERVIEW
The GNC 420’s direct-to function provides a quick
method of setting a course to a destination waypoint.
Once a direct-to is activated, the GNC 420 establishes a
point-to-point course line (great circle) from the present
position to the selected direct-to destination. Navigation
data on the various NAV pages provides steering guidance
until the direct-to is cancelled or replaced by a new
destination.
Selecting a direct-to destination:
1) Press the Direct-to Key. The Select Direct-to
Waypoint Page appears (Figure 4-1), with the
waypoint identifier field highlighted.
Figure 4-1 Select Direct-to Waypoint Page
2) Use the small and large right knobs to
enter the identifier of the desired destination
waypoint (Figure 4-2).
Figure 4-2 Waypoint Identifier Field Selected
3) Press the ENT Key to confirm the selected
waypoint, and press the
ENT
Key again to
activate the direct-to function (Figure 4-3).
Figure 4-3 ‘Activate?’ Field Highlighted
When off course while navigating to a waypoint, the
direct-to function may also be used to re-center the CDI
(HSI) needle and proceed to the same waypoint.
Re-centering the CDI (HSI) needle to the
same destination waypoint:
Press the
Direct-to
Key, followed by the
ENT
Key twice.
NOTe: When navigating an approach with the
missed approach point (MaP) as the current
destination, re-centering the CDi (HSi) needle
with the
Direct-to Key cancels the approach.