Operating instructions

Controlling the Autopilot
600-00142-000 Rev 01 -31- Entegra EXP5000 PFD
will become solid magenta and the autopilot will track the input
heading. The autopilot control head and the EXP5000 will indicate
“HDG”. The Heading Bug will remain solid magenta until heading
mode is cancelled. Select a new heading at any time while the
autopilot is in heading mode and the autopilot will track the new
Heading Bug value.
Nav Mode
Press the NAV button on the autopilot control head to engage Nav
mode. The autopilot will intercept and track the desired course. In this
mode, the autopilot tracks the active plan of the selected navigator
(Nav=GPS 1 or GPS 2) or an active VOR or localizer (Nav=VLOC 1
or VLOC 2). The autopilot control head and the EXP5000 will indicate
“NAV”. If a localizer is selected, the autopilot will automatically select
APR mode. In this mode, the Heading Bug will be hollow and remains
at its last set value, which is not necessarily aligned with the Nav
course. Both the autopilot control head and the EXP5000 will
annunciate “NAV APR”. Glideslope capture is supported while in
“NAV APR ALT” mode.
GPS Roll Steering Mode (GPSS Mode) (S-TEC 55X only)
In GPS Roll Steering mode, the autopilot tracks the active flight plan
of the selected GPS (Nav=GPS 1 or GPS 2). Press the NAV button
on the autopilot control head twice to engage GPSS mode. The
autopilot will then begin tracking the GPS steering commands from
the selected GPS. The autopilot control head and the EXP5000
autopilot annunciation bar will indicate GPSS. Avidyne recommends
that you use GPSS mode as the Nav Mode during autopilot
operations to provide a higher level of accuracy. In this mode, the
Heading Bug will be hollow and remains at its last set value, which is
not necessarily aligned with the Nav course.
!
Do not use GPSS mode on the final approach segment of a
VLOC approach (ILS, LOC or non-GPS-overlay VOR). You
must select NAV mode (and clear GPSS mode) prior to the
turn onto the final approach course.