Aspen Avionics Evolution EFD 1000 C3 Pro PFD - GPS APPR Mode Operation - WAAS GPS Underlay to ILS Approach Using Pilot Navigation and GPSS

CHAPTER 4 REFERENCE GUIDE
Page 4-63
091-00019-001 REV B
EFD1000 C3 Pro PFD Pilot’s Guide
NOTE
The PFD supports GPS LPV approaches (Approaches
with Vertical Guidance) by providing the autopilot
with GPS lateral and vertical deviation signals that are
identical to those typically provided by an ILS radio.
To y GPS LPV approaches, congure and operate the
autopilot as you would for an ILSapproach.
NOTE
Some IFR GPS navigators include ILS approaches
in their procedures database. GPS may be used to
navigate the initial segments of the ILS approach, but
the pilot must switch to VLOC navigation outside the
FAF and before glide slope intercept.
Some integrated GPS/NAV receivers (like the
Garmin 4xx/5xx series) can be congured to switch
automatically, and the PFD Selected CDI Navigation
Source will follow automatically. It is the pilot’s
responsibility to verify that the PFD CDI source is
correctly set to VLOC# before reaching either glide slope
intercept or the FAF.
GPS APPR Mode Operation – WAAS GPS Underlay to ILS Approach
Using Pilot Navigation and GPSS
1. With a valid ILS approach loaded and activated in the GPS, use the CDI Source
Select Button to couple the GPS to the PFD CDI (see Section 4.4.5.).
2. Verify that the correct ILS frequency is tuned.
3. When the active flight plan leg is the course to the Initial Approach Fix (IAF),
enable GPSS via the GPSS Hot Key.
4. Engage the autopilot in Heading (HDG) and Altitude (ALT) Hold modes and
verify that the aircraft continues to fly the course to the IAF.
5. Monitor the PFD CDI and aircraft track to ensure the aircraft flies to the IAF
and then turns outbound for the course reversal.
6. A WAAS GPS navigator provides guidance along curved flight paths, and will
guide the aircraft through the course reversal and establish it inbound to the
FAF without pilot intervention.
7. Once established on the final approach course to the FAF, engage the
autopilot’s Approach (APPR) mode.
8. Use the PFD CDI Source Select Button to change to the VLOC for the
approach (if not done automatically by the GPS/nav receiver).
9. Monitor the PFD CDI localizer deflection and verify that, upon intercepting
the localizer, the autopilot captures the final approach course and switches to
the Approach (APPR) mode.
10. Monitor the autopilot localizer tracking performance. Upon intercepting
the glide slope, verify that the autopilot captures glide slope and initiates a
descent.