AOPA Turbine Pilot Magazine - January 2019 - 94

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1 Rewards points can be redeemed for Cash Back or other items provided through AOPA Pilot Rewards. A Cash Back redemption is applied
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ADS-B

Performance Report (https://adsbperformance.faa.gov/PAPRRequest.aspx)
indicates a failure. The email accompanying your performance report includes a
link to the FAA's PAPR Users Guide, which
also is available online (https://adsbperformance.faa.gov/PAPRUsersGuide.
pdf ). This is a comprehensive and helpful document.
If a parameter fails 100 percent of the
time, it's a hard failure most often resulting from a system configuration error
when programming the unit at installation. A failure 1 or 2 percent of the time
is more of a nuisance failure, and might
be caused by brief masking of the GPS
and/or ADS-B antenna during the flight.
The report looks at many aspects of
the ADS-B Flight ID; common problems
are omitting the "N" from the aircraft's
N-number-or conversely, entering only
the N within the field. A partial failure
also could be caused by flying at the edge
of ADS-B ground station coverage.
If the emitter category is highlighted
in red, make sure it's configured properly.
Most GA aircraft will be 1, "Light"-this
is for aircraft weighing less than 15,500
pounds. (If your installer selected
"Small" and your aircraft isn't greater
than or equal to 15,500 pounds and
less than 75,000 pounds, it's the wrong
choice.)
NIC, NAC, and SIL are GPS parameters. Don't panic if they're all flagged as
100-percent failures; the cause is usually a
simple (if not intuitive) configuration error.
Early on, some Garmin installations were
seeing failures here; the installer scrolled
through a configuration menu until reaching "ADSB"-except the correct setting was
the next one, "ADSB PLUS" (this mistake
is uncommon today). A 100-percent failure could mean your ADS-B hardware or
software is not compatible with your position source; more often it's just improper
system configuration. Partial failure can
be caused by flight at the fringe of ADS-B
ground station coverage, antenna masking
caused by maneuvering, or intermittent
loss of GPS service.
Under kinematics, the system makes a
reasonableness check of changes in barometric and/or GPS altitude, position,
94 | AOPA PILOT January 2019

and velocity. Anything highlighted in
red indicates position changes outside
the range expected for normal aircraft
performance.
Air on ground means that the FAA
ground system received messages indicating the aircraft was airborne while it
was on the airport surface. This could
indicate a squat switch issue, that the
GPS stall speed setting is incorrect-too
low a stall speed can cause the avionics
to transition to air mode during highspeed taxi-or the avionics initializing
in air mode at startup.
Many parameters report maximum
consecutive failures, which is the number of consecutive noncomplying reports
received. If an MCF exceeds its threshold, an MCF exception is flagged.
Here's an important tip: If you fail the
performance test while trying to qualify for the FAA's $500 ADS-B rebate,
email the rebate help address and ask
for a review of your (failing) results. If
they can tell you why you failed the first
time, it will be much easier to prevent a
recurrence.
FAA REBATE

Is the rebate retroactive for those
who recently installed, but before
the rebate program was re-launched?
Unfortunately, no. We have been told
that the FAA cannot consider rebates for
aircraft that have flown with ADS-B Out
in the National Airspace System before
October 12, 2018.
Why didn't AOPA fight to make
this rebate retroactive for those of us
who installed in the last year? AOPA's
government affairs team had been lobbying to bring back the rebate as a means to
encourage additional ADS-B equipage,
and asked about aircraft owners who had
equipped since the initial rebate period.
However, the government-approved rules
for the rebate program did not allow retroactive rebates.
AOPA
EMAIL mike.collins@aopa.org

LEARN MORE

See AOPA's online ADS-B resources (www.
aopa.org/adsb) and ADS-B selection tool
(www.aopa.org/adsbselector).

https://adsbperformance.faa.gov/PAPRRequest.aspx https://adsbperformance.faa.gov/PAPRRequest.aspx https://adsbperformance.faa.gov/PAPRUsersGuide.pdf https://adsbperformance.faa.gov/PAPRUsersGuide.pdf https://adsbperformance.faa.gov/PAPRUsersGuide.pdf http://www.AOPA.org/creditcard http://www.AOPA.org/creditcard http://www.aopa.org/adsb http://www.aopa.org/adsb http://www.aopa.org/adsbselector

AOPA Turbine Pilot Magazine - January 2019

Table of Contents for the Digital Edition of AOPA Turbine Pilot Magazine - January 2019