Trio Pro Pilot Manual 4.1
21
Cross Track Error Field (XTK)
Cross Track Error Field (
XTK
) provides a distance
measurement in miles, tenths and hundredths of how far the
aircraft is positioned either right or left of the desired track
(
DTK
). The maximum value in this field is 9.99 miles.
A positioning symbol, immediately preceding the numerical data, indicates the "fly to" direction required
to null this error.
If this symbol has its apex to the left (<), the autopilot will fly to the left to eliminate the error.
If the symbol has its apex the right (>) the autopilot will fly to the right to eliminate the error.
Here the aircraft is just .02 miles to the right of the desired
track, so the autopilot will fly to the left to resume correct
DTK.
Other Available Fields on the Bottom Line
The bottom display line, extreme right field is another variable field used to display other tracking data of
interest to the pilot. The possible data fields displayed are:
GS
Groundspeed, closure speed to the destination waypoint
ETE
Estimated time en-route, in hours and minutes format
ETe
Estimated time en-route, in minutes and seconds format
RNG
Distance from the current “TO” waypoint
(WPT)
"TO" waypoint identifier *
(TC)
Digital graphic turn coordinator display *
DIS?
Distance tolerance error indicator
TRN?
Turn tolerance error indicator
SPD?
Speed tolerance error indicator
TOP
Track Offset Position indicator
VS
Vertical Speed mode indicator**
AH
Altitude Hold mode indicator**
* No associated label field displayed
** Shown if the VNAV servo is on
Each field above except the
DIS?
,
TRN?
and
SPD?
fields is selected by pressing the encoder
pushbutton momentarily. The
DIS?
,
TRN?
and
SPD?
fields are automatically displayed to
indicate GPS data anomalies.
The
ETE
or
Ete
label format is selected automatically by the autopilot. The
TOP
field will not be
displayed if the
TOP
value is 0.00 (no offset).
Groundspeed (GS)
The
GS
(groundspeed) field indicates the aircraft speed over
the ground in knots as provided by the host GPS system. This
field has a maximum value of 999 knots per hour.