Avionics News March 2018 - 59

LEFT: Traffic Information Services-Broadcast, or TIS-B,
gives a pilot equipped with ADS-B In the location of
surrounding traffic under FAA radar surveillance.
BELOW: ADS-B-equipped pilots can request a
performance report over the internet after a flight
in "ADS-B rule" airspace. Reports are sent via email,
typically within 30 minutes of filling out the form.

available coverage, terrain and other factors. "Just because your ADS-B passed the initial test after installation
doesn't necessarily mean your system will comply with
the rule afterward," Marks said.
Marks has a team of nine avionics inspectors and three
analysts working full time to identify and analyze errant
ADS-B outputs, and when avionics problems are confirmed, they notify the aircraft owner. Marks and his team
have shifted their ADS-B compliance machinery into high
gear as equipage nears 50,000 aircraft and the 2020 mandate looms less than 22 months away.
Under the changes made in December, an aircraft can
be placed on the NSAL if the ADS-B-equipped aircraft is
emitting "erroneous or hazardously misleading" information. "Over the past three years, (FAA monitoring) has
identified some ADS-B Out aircraft with non-performing
equipment transmitting data used by ATC and ADS-B Inequipped aircraft that present a safety hazard to the National Airspace System," according to an FAA notification of NSAL to the public on Dec. 20, 2017.
NSAL aircraft, those with persistent or more serious

problems, are a subset of the so-called non-performing
equipment aircraft, the latter of which number in the thousands. Marks' team is trying to reach owners of all NPE
aircraft through a mass mailing of notification letters,
hoping to correct the issues before having to place the
aircraft on the NSAL.
As of mid-January, more than 400 aircraft were on the
list, mostly foreign-registered airliners with a common
ADS-B Out issue for which a fix has been developed.
Marks expected the number of general aviation aircraft
on the list to increase over time, but said "Our goal will
always be to resolve avionics issues first when possible to
avoid the need to put an aircraft on the NSAL."
For pilots, the FAA's actions highlight the importance
of regularly requesting a PAPR, not the least of which is
that the cover page will tell you in red if you are on the
NSAL. Specific issues with the unit also are highlighted
in red, and anything red means the aircraft has NPE.
"A lot of pilots install the ADS-B equipment and assume everything is fine," Marks said. "If it's not, a member of my team will contact them at some point." q
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Table of Contents for the Digital Edition of Avionics News March 2018

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Avionics News March 2018 - 1
Avionics News March 2018 - No label
Avionics News March 2018 - Cover2
Avionics News March 2018 - 1
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Avionics News March 2018 - Cover3
Avionics News March 2018 - Cover4
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