Only the SV-GPS-2020 or equivalent “high integrity” GPS unit meets the (GPS
portion of the) requirements of the FAA 2020 ADS-B Out mandate. If you are
equipping your plane for use in the US, compliant with the FAA 2020 ADS-B Out
mandate, we recommend that you install the SV-GPS-2020, not the SV-GPS-250
(except as a secondary GPS).
Valid GPS data is required for time, compass calibration, moving map functionality,
ADS-B IN, and ADS-B OUT, data logging, and other internal functions of the
SkyView system. If your plane is already equipped with a GPS unit and it can
output GPS data, SkyView can use that GPS data for its operations (other than FAA
2020 ADS-B Out mandate). However, if you decide to do so, be advised that other
GPS units typically provide GPS data updates only once per second (1 Hz); this can
cause position updates for Synthetic Vision (SynVis) and map position to appear
“jerky”. In contrast, the SV-GPS-250 and SV-GPS-2020 provide positional updates
much faster – four times per second (4 Hz) for the SV-GPS-2020, and five times per
second (5 Hz) for the SV-GPS-250, which provides a superior display for SynVis and
map position updates.
Use of the SV-GPS-2020 outside the US
The SV-GPS-2020 is designed to meet the requirements of the (US) FAA 2020 ADS-B Out
mandate for Experimental Amateur Built (EAB), Experimental Light Sport Aircraft (E-LSA) and
Special Light Sport Aircraft (S-LSA) planes flying in the US. Upon initial release of the SV-GPS-
2020 (January, 2016), Dynon Avionics cannot (currently) provide information on the
applicability, or requirements, or regulatory issues for the SV-GPS-2020 in any other country. As
such information is received, or developed, it will be added to this section in future revisions of
this document.
Considerations for converting an SV-GPS-250 to an SV-GPS-2020 in Special Light
Sport Aircraft (S-LSAs)
For US pilots, modification of S-LSA aircraft, such as replacing an installed SV-GPS-250 with an
SV-GPS-2020, or adding an SV-GPS-2020 to a plane with an SV-GPS-250 already installed,
requires specific approval from the manufacturer. This usually entails a Major Repair and
Alteration (MRA) authorization from the S-LSA manufacturer. Your S-LSA manufacturer may
provide an SV-GPS-2020 kit and instructions to make an SV-GPS-2020 installation easier and
faster. Upon initial release of the SV-GPS-2020 (January, 2016), Dynon Avionics cannot
(currently) provide information on whether, or not, any S-LSA manufacturer and/or dealer has
developed an SV-GPS-2020 kit, has a MRA letter available for installation of the SV-GPS-2020, or
has evaluated the SV-GPS-2020 for applicability in their aircraft. Thus, if you are a US S-LSA
owner interested in installing the SV-GPS-2020 in place of, or in addition to, an installed SV-
GPS-250, your first query should be to your S-LSA manufacturer. As such information is
received, or developed, it will be added to this section in future revisions of this document.
Figure 91 is a high-level overview of a suggested SV-GPS-250/2020 installation and
configuration procedure.
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