Avionics News April 2018 - 47
Available on the FAA website, the PAPR
User's Guide addresses each of the
report's items with some detail. But
finding the parameters that fail the test
are as easy to see as red lights.
flawed data with its owner/operator, so they can
remediate the problem with their avionics shop. If
the aircraft owner does not respond to the FAA notice
regarding the ADS-B issue, the FAA will probably
filter that aircraft out of ATC services without further
notice.
That report card, the Public ADS-B Performance
Report, or PAPR, is an automated tool that validates
the performance of ADS-B equipment for owners,
operators and avionics repair stations. They make their
request online by providing the date and Zulu start and
end time of a flight, the N-number or 24-bit ICAO code
address (aka Mode S code), the configuration of the
ADS-B equipment installed, and the requester's name
and email address.
The system then searches its inventory of past
flights, and if it finds a flight with a matching
identification (N-number or ICAO address), it sends
the report to the email address within a half-hour. For
a viable report, the FAA recommends that the specified
evaluation flight climb to at least 5,000 feet above
ground level and fly for at least 10 minutes in an area
served by ADS-B. If PAPR cannot find the specified
flight, the aircraft has an ADS-B problem.
An unrequested PAPR will come with an appeal
for the aircraft owner to connect with Flight Service's
ADS-B Focus Team, which works with owners to
resolve the problems PAPRed in red. Patience might be
in order because the team deals with approximately 100
incorrect ICAO address or flight identification cases a
month.
Assigned by the FAA, the aircraft-specific ICAO
address is different from the flight identification. But
like fraternal twins, the two are permanently related.
For many aircraft, the flight ID is its N-number. But
some aircraft operate with a call sign, like Angel
Flight, said Arnold Hill, avionics manager at Des
Moines Flying Service, which replaces the aircraft
N-number for ATC identification.
Avionics repair stations are generally the
unintentional source of "erroneous and improper"
ADS-B data. To integrate ADS-B components,
installers must program roughly two dozen parameters,
each a typo-opportunity to make solid data erroneous
or improper.
On the equipment integration side, "you need to
know what GPS you're dealing with and its position
quality," Hill said. Other parameters are more esoteric.
"What kind of altitude format are you coming in with?
Gray code? Serial 25 foot? Serial 10 foot?"
The aircraft configuration asks for such parameters
as the vertical speed rate and maximum aircraft speed.
ADS-B needs to know the aircraft's length, width,
and the lateral and longitudinal offset of the GPS
Continued on following page
avionics news
*
april
2018
47
Table of Contents for the Digital Edition of Avionics News April 2018
No label
Avionics News April 2018 - Intro
Avionics News April 2018 - Cover1
Avionics News April 2018 - Cover2
Avionics News April 2018 - No label
Avionics News April 2018 - 2
Avionics News April 2018 - 3
Avionics News April 2018 - 4
Avionics News April 2018 - 5
Avionics News April 2018 - 6
Avionics News April 2018 - 7
Avionics News April 2018 - 8
Avionics News April 2018 - 9
Avionics News April 2018 - 10
Avionics News April 2018 - 11
Avionics News April 2018 - 12
Avionics News April 2018 - 13
Avionics News April 2018 - 14
Avionics News April 2018 - 15
Avionics News April 2018 - 16
Avionics News April 2018 - 17
Avionics News April 2018 - 18
Avionics News April 2018 - 19
Avionics News April 2018 - 20
Avionics News April 2018 - 21
Avionics News April 2018 - 22
Avionics News April 2018 - 23
Avionics News April 2018 - 24
Avionics News April 2018 - 25
Avionics News April 2018 - 26
Avionics News April 2018 - 27
Avionics News April 2018 - 28
Avionics News April 2018 - 29
Avionics News April 2018 - 30
Avionics News April 2018 - 31
Avionics News April 2018 - 32
Avionics News April 2018 - 33
Avionics News April 2018 - 34
Avionics News April 2018 - 35
Avionics News April 2018 - 36
Avionics News April 2018 - 37
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Avionics News April 2018 - 41
Avionics News April 2018 - 42
Avionics News April 2018 - 43
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Avionics News April 2018 - 46
Avionics News April 2018 - 47
Avionics News April 2018 - 48
Avionics News April 2018 - 49
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Avionics News April 2018 - 53
Avionics News April 2018 - 54
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Avionics News April 2018 - 58
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Avionics News April 2018 - 70
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Avionics News April 2018 - 72
Avionics News April 2018 - Cover3
Avionics News April 2018 - Cover4
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