Trio Avionics Pro Pilot - Manual (Page 25)

Trio Pro Pilot Manual 3.8
25
Intercept Boundary
Variable distance depending on speed to allow smooth intercept
X
Autopilot flies INT mode to intercept GPS course
As the aircraft nears the GPS course line the
autopilot automatically switches to TRK
WPT WPT GPS course line
X
Autopilot in INT
Example: If the current ground track is 010 degrees when the CRS mode is selected, the commanded
course (CRS) will be initialized to 010 degrees.
 If H NAV servo is activated while in the CRS mode, the current track over the ground is
automatically entered as the commanded CRS.
 If the servo is OFF just select the CRS mode. Then, push the HNAV button (turning on the
servo). This will cause the current course to be selected and flown.
The TRK field below the CRS field indicates the actual across-the-ground track (TRK) from the GPS.
While in the CRS mode, rotating the encoder knob allows the pilot to adjust the commanded course in
one degree increments either right or left of its current value. Rotating the encoder more quickly
changes the course in larger increments. After changing the CRS field with the encoder the plane will
turn left or right until the CRS and TRK fields are once more the same.
The distance right or left of the desired track is indicated in the XTK field in the top right line and is
preceded by a left or right pointing apex (< or >), which shows which direction the airplane needs to fly to
get back on the original flight plan or “GOTO” waypoint.
The pilot may exit the CRS mode by pressing the H MODE button until the desired mode (INT or TRK) is
selected.
Note: If the XTK error is inside the intercept boundary line, the autopilot will sequence directly from CRS
to TRK (bypassing the INT mode) when the mode button is momentarily pressed.
The PCS (Pilot Command Steering) mode provides an alternate mode of entry to the CRS mode and is
described on page 31.
Intercept a Course (INT)
The intercept mode (INT) is designed to bring the aircraft back onto the original desired track after being
vectored around by ATC or when avoiding weather or flying around airspace restrictions. INT is useful
to bring the plane back to the original flight plan course (or Airway) instead of using the GOTO feature to
take you to the next waypoint (e.g. “resume normal navigation”). While in the INT mode the pilot is also
able to adjust the course intercept angle as desired.
Intercept Operation
INT is activated by pressing the H MODE switch (to sequence from the TRK or the CRS mode) until the
INT LED is illuminated.