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System Operation
3-47
GNS-XL Flight Management System
Rev. 1
Jul/98
As the aircraft approaches
the AR waypoint, a message
is displayed on the fourth line
of the CDU indicating the
next action the aircraft will
take (NX DME ARC). This
message is displayed thirty
seconds prior to the event
and disappears when the
action is initiated. Figure 3-
78 indicates the aircraft is fly-
ing DIRECT to D259J where
the aircraft will begin flying a
DME Arc (AR).
Figure 3-79 shows the air-
craft is within thirty seconds
of intercepting the DME Arc
at D259J.
NOTE: The naming conven-
tion for ARC waypoints is as
follows: D indicates DME.
259 indicates the radial from
the ARC center NAVAID. J
indicate the ARC distance.
i.e. A=1nm J=10nm.
Figure 3-80 shows the air-
craft is flying the DME Arc to
DILLY. (ARC 10.0) in the
DIS field indicates the arc center is 10.0 NM from the aircraft’s pre-
sent position.
NOTE: Distance (DIS) dis-
played is the distance from
the present aircraft position
to the TO waypoint.
Estimated Time Enroute
(ETE) is the time around the
arc path to the TO waypoint.
DIRECT 11:47
AR D259J 11:53
NX DMEARC 355
DIS 2.7
ETE 00:001.0
DTK 239
GS 150
WIND ---/---
-AUTO-
NAVIGATION 1/4
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Figure 3-79
DMEARC
TO DILLY 9000A
DIS (ARC 10.0) 7.0
ETE 00:03.0
DTK 355
GS 150
WIND ---/---
NAVIGATION 1/4
<
>
>
Figure 3-80
DMEARC
TO DILLY 9000A
NX DRK 12:02
DIS (10) 2.0
ETE 00:00.7
DTK (125) 029
GS 150
WIND ---/---
-AUTO-
NAVIGATION 1/4
<
>
>
Figure 3-81
FR DILLY 11:59
TO DRK 6500G
DIS 9.5
ETE 00:03.8
DTK 125
GS 149
WIND ---/---
NAVIGATION 1/4
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Figure 3-82