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The GNC 250XL’s direct-to function provides a quick method of setting a course
to a destination waypoint. Once a direct-to destination is activated, the GNC 250XL
will establish a point-to-point route line along the great circle from your present
position to the destination and provide steering guidance and navigation data to the
waypoint until it is cancelled. If you are navigating to a waypoint and get off course,
the direct-to function may also be used to re-center the d-bar to proceed to the same
waypoint.
To select a direct-to destination:
1. Press the
D
key. The CDI page will appear with the destination field highlighted.
2. Use
K
and
O
to enter the identifier of the desired waypoint.
3. Press
E
to confirm the identifier, and
E
to accept the direct-to confirmation page.
To re-center the d-bar to the same active-to waypoint:
1. Press the
D
key, followed by
E
twice.
A direct-to may also be quickly activated from many pages that display a single
waypoint identifier (e.g., the nearest airport page) by simply pressing
D
and
E
.
For pages that display a list of waypoints (e.g., the user waypoint list page), you must
highlight the desired waypoint with the cursor before pressing the
D
key. Once a
direct-to is activated, the GNC 250XL will provide navigation guidance until the
direct-to is cancelled or the unit is turned off.
To cancel a direct-to destination:
1. Place the cursor over the destination field on the CDI page.
2. Press
\
. The destination field will go blank.
3. Press
E
. The GNC 250XL will resume navigating route 0 (the active route) if available.
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To quickly select a direct-to from any page that
displays a single waypoint identifier (e.g., the
nearest airport page), press D, followed by E.
To select a direct-to destination, press the D key
and enter the waypoint identifier using K and O.
SECTION
5
DIRECT-TO
Selecting and
Cancelling a Direct-To
250xl manual 2 7/17/98 1:27 PM Page 63