TruTrak EFIS AP (8300-057C) - Manual (Page 3)

OPERATION OF THE BASIC FLIGHT INSTRUMENT
As with our autopilot products, extensive attention has been given to providing the
simplest operation. No sequential pressing of buttons is required to reach basic control functions
and no additional button pressing is required to set values. Starting with a clean sheet of paper
the layout of controls (two knobs and five soft keys) is sufficient to handle all EFIS and built in
autopilot control functions.
On the basic flight instrument, the right hand knob is primarily dedicated to setting the
barometer and the left hand knob is primarily dedicated to setting the direction bug. Pressing the
ALT soft key sets the altitude bug to the 100 foot mark nearest the present altitude. This setting
is entered into the active state by pressing the right hand knob. If the intent is to select an altitude
the ALT button is pressed and the right hand knob is rotated to select the desired altitude. (With
the knob out, steps are 500 feet and with the knob depressed, steps are 100 feet.) When the
altitude has been set, press the knob to ENTER the value. It will be noted that when any value is
to be set a screen showing the selection to be made will appear above the appropriate knob.
When the aircraft is within 30 miles of the destination fix, the CRS label will display on
the soft key at the far left. To select an arrival course different from the enroute course on the
HSI press CRS and then rotate the left hand knob. When the course is set press the knob to
ENTER. A computer generated arrival procedure in which steering from the enroute course to
the selected runway is described in the special functions section.
Just above the left knob is the label [DIM] in small print. To set the dimmer, press and
release the knob, then rotate to set the desired light intensity. When this is done, press and release
the knob to exit the set mode.
When there is NO GPS the directional gyro operates in the free gyro mode, and the label
above the far left soft key is SET DG. When this button is pressed, the left knob is used to set the
DG to the magnetic compass. As is the case with any free gyro this procedure is to be repeated
periodically as required.
OPERATION OF THE EFIS PILOT
When the autopilot is not engaged operation and labels are the same as the basic EFIS
except for the presence of the AP button. When the autopilot is engaged, the right hand knob is
dedicated to selecting vertical speed. The [BARO] label is now just above the right knob. To
adjust the barometer, press and release the knob to enter the Baro set mode, and then rotate the
knob, press and release the knob to ENTER. The button to the left of AP is labeled with NAV or
GPSS. This mode is turned on or off by pressing the knob. Rotation of the directional knob also
turns off the NAV or GPS mode. When GPSS mode is engaged GPSV appears above the button
to the right of AP. Further information on GPS steering is in the special functions section.
TruTrak Flight Systems 1 EFIS Autopilot Installation Manual
April 2009 8300-057 Rev D