Garmin GTN 625 Installation Manual page 47

For flight planning purposes, in areas where SBAS coverage is not available, the flight crew must check
RAIM availability.
 Within the United States, RAIM availability can be determined using the Garmin WFDE
Prediction program, Garmin part number 006-A0154-05 (included in GTN trainer) software
version 3.00 or later approved version with Garmin approved antennas or the FAA's en route and
terminal RAIM prediction website: www.raimprediction.net, or by contacting a Flight Service
Station.
 Within Europe, RAIM availability can be determined using the Garmin WFDE Prediction
program or Europe's AUGER GPS RAIM Prediction Tool at
app/home
.

For other areas, use the Garmin WFDE Prediction program.
This RAIM availability requirement is not necessary if SBAS coverage is confirmed to be available along
the entire route of flight. The route planning and WFDE prediction program may be downloaded from the
Garmin website on the internet. For information on using the WFDE Prediction Program, refer to Garmin
WAAS FDE Prediction Program, part number 190-00643-01, 'WFDE Prediction Program Instructions'.
For flight planning purposes, for operations within the U.S. National Airspace System on RNP and RNAV
procedures when SBAS signals are not available, the availability of GPS RAIM shall be confirmed for the
intended route of flight. In the event of a predicted continuous loss of RAIM of more than five minutes for
any part of the intended route of flight, the flight should be delayed, canceled, or rerouted on a track where
RAIM requirements can be met.
For flight planning purposes for operations within European B-RNAV/RNAV 5 and P-RNAV airspace, if
more than one satellite is scheduled to be out of service, then the availability of GPS RAIM shall be
confirmed for the intended flight (route and time). In the event of a predicted continuous loss of RAIM of
more than five minutes for any part of the intended flight, the flight should be delayed, canceled, or
rerouted on a track where RAIM requirements can be met.
Applicable to dual installations consisting of two Garmin GNSS units: For flight planning purposes, for
operations where the route requires Class II navigation the aircraft's operator or flight crew must use the
Garmin WFDE Prediction program to demonstrate that there are no outages on the specified route that
would prevent the Garmin GNSS navigation system from providing GPS Class II navigation in oceanic
and remote areas of operation that requires RNP-10 or RNP-4 capability. If the Garmin WFDE Prediction
program indicates fault exclusion (FDE) will be unavailable for more than 34 minutes in accordance with
FAA Order 8400.12B for RNP-10 requirements, or 25 minutes in accordance with FAA Order 8400.33 for
RNP-4 requirements, then the operation must be rescheduled when FDE is available.
Applicable to dual installations consisting of two Garmin GNSS units: Both Garmin GPS navigation
receivers must be operating and providing GPS navigation guidance for operations requiring RNP-4
performance.
Applicable to dual installations consisting of two Garmin GNSS units: North Atlantic (NAT) Minimum
Navigational Performance Specifications (MNPS) Airspace operations per AC 91-49 and AC 120-33
require both GPS/SBAS receivers to be operating and receiving usable signals except for routes requiring
only one Long Range Navigation sensor. Each display computes an independent navigation solution based
on its internal GPS receiver.
Whenever possible, RNP and RNAV routes including Standard Instrument Departures (SIDs) , Standard
Terminal Arrival (STAR), and en route RNAV "Q" and RNAV "T" routes should be loaded into the flight
plan from the database in their entirety, rather than loading route waypoints from the database into the
flight plan individually. Selecting and inserting individual named fixes from the database is permitted,
provided all fixes along the published route to be flown are inserted. Manual entry of waypoints using
latitude/longitude or place/bearing is prohibited.
190-01004-02
Rev. F
http://augur.ecacnav.com/augur/
GTN 625/635/650 TSO Installation Manual
Page 1-29