Elite PI-121, Operator'S Handbook Manual

Page: 218 / 390

ELITE OPERATOR’S MANUAL
196
NAV:
In navigation (NAV) mode the autopilot will intercept and
track VOR courses. To use the autopilot with a conventional
CDI-type VOR indicator fi rst make sure the autopilot
is in HDG mode and then tune the desired navigation
frequency. Set the OBS to the desired course and then
depress the NAV button causing the NAV indicator to
fl ash signifying the mode is armed. Within fi ve seconds
move the heading ‘bug’ to the same value as selected on
the OBS. The autopilot will then fl y a 45 degree intercept
heading until course capture where up on the system will
track the desired course.
NOTE: The NAV indicator will not fl ash if the NAV mode is
selected while the aircraft is level /- 4 degrees and
2-3 dots of course deviation, but will rather go immediately
into NAV mode directly.
To use the navigation feature of the autopilot with an
HSI fi rst tune the navigation frequency. Use the Course
Set Knob to select the desired course line value. Set the
intercept angle by placing the heading ‘bug’ on the desired
heading and press the HDG button, if not already in HDG
mode. Now press NAV button and fl y the selected heading
until course capture. The NAV light will fl ash until course
interception to indicate that it is armed. (See the NOTE
above.)
APR / GS / BC:
To use the autopilot in approach (APR) mode fi rst make
sure that the system is in HDG mode if using a conventional
CDI-type VOR indicator. Tune the appropriate ILS, LOC or
VOR frequency. Set the OBS to the fi nal approach course.
(NOTE: if intending to fl y a back course be sure to use the
front course setting. Press the BC button after pressing the
APR but ton.) Press the APR button causing the APR light
to fl ash indicating it is armed. Turn the heading ‘bug’ to the