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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.
EGNOS
GAGAN
MSAS
WAAS
altitude, track, and ground speed data. GPS status annunciates under the following
conditions.
Acquiring
3D Nav
3D Diff Nav
LOI
Most of Europe and parts of North Africa.
India only.
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.
3D navigation mode. GPS receiver computes altitude using
satellite data.
3D navigation mode. Differential corrections from SBAS
provider are in use.
Satellite coverage is insufficient to pass built-in integrity
monitoring tests.
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