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Map Operation
DISPLAY FLIGHT PLAN
DATA ON MAP
If a host GPS is outputting data
in the Bendix/King equivalent
ARNAV R-30 (RS232) data
sentence format, in LEG mode,
the active flight plan will be
sent to the KMD 250 and is dis-
played as an overlay on the
map as shown in Figure 1-49.
Figure 1-49
If a KLN 94 is supplying the
GPS data, and the KLN 94 is
configured to produce the
"Enhanced RS-232 GPS bus",
the KMD 250 will display the
curved paths including DME
arcs, Procedure Turns and
Holding Patterns. Figure 1-50
shows an example.
If another type of GPS is used,
then during the curved flight
segments of approaches (i.e.
DME arcs, procedural turns
Figure 1-50
and holds) most GPS units
stop outputting flight plan data but continue to output positional data.
During a DME arc or procedural turn, the KMD 250 will continue to show
position, track and ground speed but the curved line depicting the arc or
turn will not be displayed. In OBS mode, some GPS units will not be
able to provide flight plan data. Present position is still provided and
flight plans will be displayed as soon as the mode is returned to LEG.
CAUTION
In the case of DME arcs, turns and holds, some GPS units send the
flight plan information as if there was no arc or curved flight path.
Therefore the KMD 250 has no option but to connect the beginning
and end waypoints of the arc or curve with a straight line. Under
these circumstances the line on the KMD 250 MUST BE IGNORED.
1-33
Rev 2 Apr/2004
KMD 250 Pilot's Guide
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