Gpss Operation, Annunciations, And Autopilot Modes - Aspen Avionics Evolution Backup Display EFD1000 Pilot's Manual

Figure 6-9
Operating in GPSS Mode
Figure 6-10
GPSS in Wings Level Mode
Page 6-16
091-00027-001 Rev A EBD Pilots Guide V&H .indb 16
6.9. GPSS Operation, Annunciations, and Autopilot
Modes
1
The Pro PFD offers GPSS. Three modes, Enabled, Wings Level, and Disabled, are possible
and annunciated in the PFD's Navigation Display. When enabled, the configured GPS
source not only provides the Basemap and flight plan data, but also passes GPSS as
the heading input to a configured autopilot. When engaged, a configured autopilot
will interpret GPSS commands as heading inputs and follow the active GPS flight 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 reflects the heading commands required
to navigate the active flight plan leg and controls the autopilot' s heading mode when
engaged. Complete understanding of autopilot mode functions and their proper selection
is recommended.
1. GPSS - Not supported in Evolution backup display
Evolution Backup Display Pilot's Guide 091-00027-001 REV A
8/27/14 8:51 AM