Sbas Providers; Gps Status Annunciations - Garmin GPS 175 Pilot's Manual

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2.26.2

SBAS Providers

NOTE
Operating with SBAS active outside of the service area may cause elevated
EPU values to display on the status page. Regardless of the EPU value
displayed, the LOI annunciation is the controlling indication for
determining the integrity of the GPS navigation solution.
SBAS supports wide area or regional augmentation through the
use of additional satellite broadcast messages.
Tap this key and select from the list of providers.
PROVIDER
EGNOS
GAGAN
MSAS
WAAS
2.26.3

GPS Status Annunciations

Once the GPS receiver determines the aircraft's position, the unit displays position,
altitude, track, and ground speed data. GPS status annunciates under the following
conditions.
ANNUNCIATION
Acquiring
3D Nav
3D Diff Nav
LOI
2-40
Most of Europe and parts of North Africa.
India
Japan only.
Alaska, Canada, the 48 contiguous states,
and most of Central America.
GPS receiver uses last known position and satellite orbital
data (collected continuously from satellites) to determine
which satellites should be in view.
3-D navigation mode. GPS receiver computes altitude
using satellite data.
3-D navigation mode. Differential corrections from SBAS
provider are in use.
Satellite coverage is insufficient to pass built-in integrity
monitoring tests.
GPS 175/GNX 375 Pilot's Guide
SERVICE AREAS
CONDITION
190-02207-02 Rev. B