Aspen Avionics Evolution EFD1000 PFD - GPS APPR Mode Operation - WAAS GPS Underlay to ILS Approach Using Pilot Nav

CHAPTER 4, REFERENCE GUIDE
EFD1000 PFD Pilot’s Guide
Page 4-52 A-01-184-00 REV B
EFD1000 PFD Pilot’s Guide
EFD1000 PFD Pilot’s Guide
GPS “APPR” Mode Operation – WAAS GPS Underlay to ILS Approach
Using Pilot Nav
1. With a valid ILS approach loaded and active in the GPS, use the CDI Nav
Source Select button to couple the GPS to the CDI (Section 4.3.9).
2. Verify that the correct ILS frequency is tuned.
3. When the active ight plan leg is in-bound to the Initial Approach Fix (IAF),
enable GPSS via the GPSS Hot Key.
4. Engage the autopilot in HDG mode, and verify that the aircraft turns to
intercept the course to the IAF.
5. Monitor the CDI and aircraft track to ensure the aircraft tracks in-bound to the
IAF, and then turns out-bound for the course reversal.
6. Using a WAAS GPS receive that provides guidance along curved ight paths,
the GPS will guide the aircraft through the course reversal and establish it in-
bound to the FAF without pilot intervention.
7. Once established inbound to the FAF, engage the autopilot’s APPR mode.
8. Couple the EFD1000 to the VLOC source tuned to the correct ILS frequency
using the CDI Source Select button (if not done automatically by the GPS/nav
receiver).
9. Monitor the CDI localizer deection and verify that, upon intercepting the
localizer, the autopilot switches to APPR capture and arms the GS.
10. Monitor the autopilot localizer tracking performance. Upon intercepting the
GS, verify that the autopilot switches from GS ARM to GS capture and initiates
a descent to track the glide slope.
NOTE
The EFD1000 enables GPS APV
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 APV approaches, congure
and operate the autopilot as you
would for an ILS approach.
NOTE
Some IFR GPS systems 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 GS intercept.
Some integrated GPS/nav receivers
(like the Garmin 4xx/5xx series) can
be congured to do this switch
automatically, and the EFD1000
CDI Source will follow that switch
automatically. It is the pilot’s
responsibility to verify that the
EFD1000 CDI source is set to VLOC
before reaching either GS intercept or
the FAF.