Default settings will allow the Safe-Fly GPS to work with an Uavionix EchoUAT with no
settings change.
Default settings will not allow the Safe-Fly GPS to work with a Trig TT22. However, the
module can be ordered with its configuration set as desired at no additional cost.
The integrity and accuracy data will not be indicated on the EFIS display unit.
The serial combiner function cannot be used.
For these installations we do recommend using the NMEA0183 output to the EFIS, to provide the EFIS
with a high-quality navigation source.
GPS Function
The Safe-Fly GPS Module utilizes a RAIM GPS which provides all data required for ADS-B 2020
compliance for ADS-B out devices listed in the “Approved Devices” section. The GPS data can also
be used with any GRT EFIS to provide the EFIS with a high-integrity navigation source. The module
communicates with compatible ADS-B out devices via a serial port connection, independent of the
EFIS display unit.
Multiple GPS Configuration for your GRT EFIS
The high-integrity nature of this GPS position means the GRT EFIS user should configure the Safe-Fly
GPS as one of the two possible GPS sources to the EFIS display unit, if at least one of the GPS inputs
is not assigned to a panel mount GPS.
For installations without an external panel-mount GPS, configure the Safe-Fly GPS as GPS1 (or
whichever GPS is commonly selected as the navigation source). For installations with one panel
mount GPS that is approach capable, the Safe-Fly GPS should be used in lieu of a non-RAIM external
GPS module.
Note that if your display unit includes an internal GPS, it is set as GPS1, GPS2, or NONE via the
“Internal GPS” setting on the “General Setup” set menu. The internal GPS is a non-RAIM GPS in all
EFIS display units equipped with an internal GPS.
GPS Status Display (This section is preliminary)
All GRT EFIS display units, with the exception of the Sport and Horizon HS/WS models, will show the
integrity and accuracy of the GPS in the upper left corner of the screen. It should not be inferred that
the “Approach” accuracy allows the GPS to be used for IFR approaches, however this indication is
provided to enhance the understanding of the performance of their GPS installation. If GPS-INTEG is
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Safe-Fly 2020 GPS – Rev P GRT Avionics, Inc
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