SV-XPNDR-261 Transponder Installation and Configuration
12-22 SkyView HDX System Installation Manual - Revision E
12.4.1.1 Determining SkyView System’s with FAA 2020 ADS-B Out Mandate
Compliance
SkyView can provide guidance as to whether your ADS-B Out installation and
configuration is compliant with the FAA ADS-B Out 2020 Mandate (SkyView Software
v12.2 or later is required): SETUP MENU > TRANSPONDER SETUP – Note the second
line.
12.4.1.2 FAA Report for FAA ADS-B OUT 2020 Mandate Compliance
After you have updated your SkyView system with a SV-GPS-2020 (or other IFR GPS
connected directly to the SV-XPNDR-261), and updated your SV-XPNDR-261’s Software
to SW02.08 or later, you should fly within an ADS-B coverage area(s) for at least several
hours (minimum), or days (optimum), before requesting the report below. This will give
the ADS-B system some reasonable amount of data with your aircraft’s new ADS-B
configuration on which to assess your compliance with the FAA 2020 ADS-B mandate.
Go to https://www.faa.gov/nextgen/programs/adsb/
See the first highlighted section entitled:
ADS-B Out Equipped?
E-mail us with your N-number, ADS-B transmitter and GPS make/model numbers to find
out if your equipment is working properly.
The email address is:
9-AWA-AFS-300-ADSB-AvionicsCheck@faa.gov.
Include the following in the email message:
• (your N-number).
• ADS-B transmitter: Dynon Avionics SkyView SV-XPNDR-261 transponder.
• GPS: Dynon Avionics SV-GPS-2020.
The FAA will email you back a report showing whether you comply, or not, with the FAA
2020 ADS-B mandate. If you do not comply, there will be detailed information about your
aircraft’s issues in complying with the FAA 2020 ADS-B Out mandate.
12.4.2 Altitude Encoder Calibration
In most transponder systems, a calibration is normally carried out every 24 months, as
part of the altimeter checks on the aircraft. The maximum allowed difference between the
primary altimeter and the altitude encoder is 125 feet (38 meters) in ETSO C88a and TSO
C88b. The primary altimeter in SkyView and the altitude encoder are the same device
(SV-ADAHRS-200). It is therefore impossible for the encoder and the primary altimeter to
exceed 125 feet (38 meters) of altitude difference. They will always be exactly the same
as each other, thereby meeting the TSO requirements. Therefore, no altitude encoder
calibration is possible or necessary.
At times it may be useful to know the altitude that is being reported to the transponder.
Since SkyView sends pressure altitude to the SV-XPNDR-261, setting BARO to 29.92
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