Trio Avionics Pro Pilot - Manual (Page 24)

Trio Pro Pilot Manual 3.8
24
Chapter 6
Horizontal Operation
Track Mode (TRK)
The track mode (TRK) is used to track a GPS flight plan or fly directly to a “GOTO” waypoint. The
autopilot uses the data stream from the GPS for determine the direction of flight.
 If a flight plan has been entered into the GPS, the autopilot will fly the courseline to each point in
the flight plan in sequence.
 If a “GOTO” waypoint has been selected, the autopilot will fly directly to the waypoint.
To use the TRK mode, press the H MODE button to light the TRK LED. Press the H NAV button. The
autopilot will engage and fly the plane directly to the waypoint or the flight plan courseline. If the plane is
some distance from the courseline, the pilot may use the intercept mode (INT) to quickly get back to the
flight plan courseline.
This mode requires a valid GPS signal to provide position information. If no GPS signal is present, this
function will not be available.
Tracking a Course (CRS)
The course mode (CRS) may be compared to flying a heading bug in a traditional system, keeping in
mind that you are selecting a course-over-the-ground and not a magnetic heading. Initially when
entering this mode the course and track will be identical. If the pilot wishes to change the track of the
plane, rotating the encoder knob will change the heading (like changing a heading bug). The autopilot
will then change course until the CRS and TRK are once again identical.
Example: If given a heading to fly by ATC, press the H MODE button to light the CRS LED, rotate the
encoder until the desired course is shown and press the H NAV button. The autopilot will engage and
smoothly turn the airplane to the desired course.
Using Course Mode
Assuming the track mode (TRK) is currently selected,
press the H MODE pushbutton to change the H
MODE LED and display to the course mode (CRS).
When switching to the CRS mode the BTW label on
the left side of the top line changes to CRS.
The three numeric characters following CRS
represent the pilot commanded ground track. The
CRS will show the current ground track (heading) the
plane was traveling when the mode is entered.
The Pro Pilot will turn the plane to keep the track
(TRK) and the course (CRS) the same value.