Aspen Avionics Evolution EFD 1000 C3 Pro PFD - GPSS Operation, Annunciations, and Autopilot Modes

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091-00019-001 REV B
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091-00019-001 REV B
CHAPTER 6 EXPANDED EMERGENCY AND ABNORMAL PROCEDURES
EFD1000 C3 Pro PFD Pilot’s Guide
6.9. GPSS Operation, Annunciations,
and Autopilot Modes
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.
The Wings Level mode removes roll steering inputs to the autopilot, causing the
aircraft to roll wings level, and displays a red slash through the annunciated A HDG and
GPSS# source. The amber GPSS Hot Key label requires pilot action. If this occurs, do the
following:
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.
Figure 6-9
Operating in GPSS Mode
Figure 6-10
GPSS in Wings Level Mode