AEA Pilot's Guide 2018-2019 - 60

NEW TO FIS-B

Continued from page 59

turbulence guidance from the
Aviation Weather Center - but
based on available bandwidth
decided on 15-minute updates.
To satisfy a request from pilots for
more granular cloud top information at
lower altitudes while remaining within
the bandwidth budget, the FAA is
providing data in 1,500-foot intervals
from 1,500 feet MSL to 15,000 feet,
and in 3,000-foot intervals to 24,000
feet. Pomrink said radar data is
broken down into "bins" measuring
1-by-1.5 nautical miles. "In each bin,
we'll tell you if there is a presence of
clouds at that altitude," he said.

The locations of lightning
strikes, which are captured
by Vaisala's U.S. National
Lightning Detection Network,
are updated every five
minutes and transmitted every
five minutes. The relatively
high update rate for air-toground strikes - an indicator
of thunderstorm activity -
may be a valuable addition
to NEXRAD mosaics of
convective weather, which the
FAA warns can be 15 to 20
minutes older than the most

PILOTS SHOULD
REVIEW THE
FAA'S GUIDANCE
ON THE NEW
PRODUCTS TO
GET THE FULL
BENEFITS OF
FIS-B AND TO
UNDERSTAND
THE LIMITATIONS
AWARENESS.

recent uplink.
Icing data includes real-time
probability for areas where
atmospheric conditions may
be conducive to icing and
supercooled large droplets,
and a forecast for potentially
affected areas during the next
12 hours. The information
is updated hourly and
transmitted every 15 minutes.
While pilots have had
access to current, forecast and
SLD icing data in graphical
format on the ground, Eldridge
Frazier, lead engineer for the
FAA's Weather Technology
in the Cockpit program, said
research is underway for how
to best use the information
in the air, work that will lead
to recommendations. "Time
is more critical when using
the current, forecast and SLD
icing products in the cockpit
compared to when (a pilot
is) doing a pre-flight on the
ground," Frazier said. "For

- 60 -

that reason, we're doing a
rigorous study." The work,
which includes flight-simulator
sessions with volunteer
pilots flying specific weather
scenarios using FIS-B icing
products on their displays,
will culminate later this
year in recommendations
for companies that will
incorporate new FIS-B data
into their weather applications.
The new FIS-B data was
active in June 2018, and pilots
will only get access to the
new information when their
individual applications are
updated. According to Duke,
the benefits will be worth the
wait, but he reminds pilots
to do their homework. "Pilots
should review the FAA's
guidance on the new products
to get the full benefits of
FIS-B and to understand the
limitations," he said. q



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Table of Contents for the Digital Edition of AEA Pilot's Guide 2018-2019

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AEA Pilot's Guide 2018-2019 - Cover1
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