Avionics News June 2014 - 58

ADS-B INSTALLATIONS
Continued from page 57

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ADS-B	Transmitters	and	Position	Sources.		
(See ADS-B Essentials, Part 2 beginning on
page 59.)
This list of frequently asked questions
explains that ADS-B transmitters must be
compatible with installed GPS position
sources. The transmitters and position
sources cannot be mixed and matched.
They must be installed in approved pairings
detailed in a list of equipment on this FAQ
that meets FAA certification requirements.
This list is current as of April 2014.

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ADS-B	Avionics	Installation	Guidance.	
(See ADS-B Essentials, Part 3 beginning on
page 62.)	
This checklist provides guidance on
the installation of approved ADS-B
Out avionics on aircraft with a standard
airworthiness certificate as well as the
installation of uncertified ADS-B Out
avionics on aircraft with an experimental
airworthiness certificate. The checklist
also covers common problems involved
in such installations and briefly explains
how to deal with them. It discusses how
to install both a 1090 MHz ES and a UAT
system on the same aircraft. When properly
configured, these systems allow pilots to
take full advantage of available ADS-B
broadcast services and capabilities at all
altitudes.

According to DenDekker, avionics
manufacturers have provided PowerPoint
presentations to help educate aircraft owners
and operators on ADS-B. He has provided
presentations for his own customers. Other shops,
such as Pacific Coast Avionics at Aurora State
Airport in Aurora, Oregon, are providing similar
information. "We try to break it down and make it
as simple as possible," said Dewey Conroy, vice
president and chief operating officer for Pacific
Coast Avionics. "Very few people are coming
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avionics news

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june

2014

through the door having figured it all out."
Many shops report considerable general
aviation interest in ADS-B In, which includes
traffic awareness capability from TIS-B and
weather capability from FIS-B (flight information
service-broadcast). TIS-B and FIS-B services are
available across most of the U.S. The ADS-B In
avionics needed to provide TIS-B traffic awareness
capability costs less than other traffic awareness
systems available. In addition, there is no monthly
subscription fee for the use of FIS-B weather data.
In some cases, customers are opting for a
single system that provides ADS-B In and Out
capabilities, including the display of traffic and
weather information on a panel-mounted display.
Others prefer displaying TIS-B and FIS-B on
tablet computers.
Recently, Hall was flying with his son, who
was piloting the Mooney into New York City. Hall
monitored the traffic picture on a tablet.
"I could see the traffic flow into New York City
airports from 50 miles away, and it gave me an
idea of how busy the world was," he said.
When Hall saw four aircraft on the display lined
up in a conga line headed into Westchester County
Airport, he knew his son would be directed to
follow this line to land at the airport. When a pilot
knows what to expect, he can plan his next move
on the airspace chessboard.
As Hall discovered, there are technical
nuances that can make a difference in getting
an ADS-B installation right the first time. More
often, problems with installations that the FAA
has identified in monitoring ADS-B avionics
compliance have occurred with uncertified
equipment installed on experimental aircraft.
Guidance on what to do in these cases is included
in the checklist beginning on page 62. The
guidance should help a repair shop that is involved
with one of these types of installations or when
the operator of an experimental aircraft asks for
installation advice regarding uncertified avionics.
Want to know how well your ADS-B system is
performing? Send an email to 9-AWA-AFS-300ADSB-AvionicsCheck@faa.gov identifying your
aircraft's registration number (N-number) and
request a system check.
Avionics News June 2014

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