Aspen Avionics Evolution EFD1000 VFR PFD - 6.9. GPSS Operation, Annunciations, and Autopilot Modes

EFD1000 VFR PFD Pilot’s Guide
Page 6-16
091-00028-001 ( ) EFD1000 VFR PFD Pilot’s Guide
Page 6-17
091-00028-001 ( )
CHAPTER 6 EXPANDED EMERGENCY AND ABNORMAL PROCEDURES
6.9. GPSS Operation, Annunciations, and Autopilot
Modes
1
The Pro PFD oers GPSS. Three modes, Enabled, Wings Level, and Disabled, are possible
and annunciated in the PFD’s Navigation Display. When enabled, the congured GPS
source not only provides the Basemap and ight plan data, but also passes GPSS as
the heading input to a congured autopilot. When engaged, a congured autopilot
will interpret GPSS commands as heading inputs and follow the active GPS ight plan,
including anticipated turns, if provided. The GPSS Enabled mode is indicated by a green
GPSS Hot Key label and a GPSS1 with an inverse A placed next to the Selected Heading
Field to describe the source (Figure 6-9) .
If GPSS is enabled and the GPS source is lost or changed, the GPSS mode automatically
changes to the Wings Level mode and annunciates as shown in Figure 6-10.
NOTE
When using GPSS with combined GPS / VLOC navigators (e.g. GNS 430/530), VLOC may
be selected as the navigation source while GPSS is engaged. To avoid confusion, note
the PFD Selected CDI Navigation Source controls the CDI and the autopilot’s navigation
and approach modes when engaged. GPSS reects the heading commands required
to navigate the active ight plan leg and controls the autopilot’s heading mode when
engaged. Complete understanding of autopilot mode functions and their proper selection
is recommended.
Figure 6-9
Operating in GPSS Mode
Figure 6-10
GPSS in Wings Level Mode
1. Requires ACU option