Garmin GTX 335 Pilot's Manual - Page 25
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5 FIS-B WEATHER AND FLIGHT INFORMATION
The GTX 345 Flight Information Services–Broadcast (FIS-B) function is capable of
receiving weather and flight information. FIS-B is a subscription-free service that is
broadcast over the UAT (978 MHz) data link. Reception of FIS-B data requires the
aircraft to be within range and line-of-sight of a ground station. Because terrain may
obstruct the signal, it may be necessary to gain altitude in order to receive the
broadcast. For information regarding the display of weather data and the associated
symbology, refer to the display operator's guide. Table 5-1 lists FIS-B weather products
and the timing associated with each.
Transmission interval is how often the weather product is broadcast by the ground
stations. Update interval is how often the weather product is refreshed with new data
from on-ground sensors.
Weather Product
CONUS NEXRAD
Regional NEXRAD
AIRMETs
SIGMETs
METARS
Winds and
Temperatures Aloft
Pilot Weather Report
(PIREP)
(Blue - Regular,
Yellow - Urgent)
TAFs
NOTAMs
190-01499-00 Rev. A
Table 5-1 FIS-B Weather Products
Expiration
Transmission
Time
Interval
(Minutes)
(Minutes)
60
30
60
60
90
90
or at the end of
the valid period
90
60
60
Garmin GTX 335/345 Pilot's Guide
5 – FIS-B WEATHER/FLIGHT INFO
FIS-B Weather and Flight
Update Interval
(Minutes)
15
2.5
5
5
typically 20 minutes,
then at 15 minute intervals
As available, 1 minute
5
typically ≤ 20 minutes
10
10
typically 20 minutes
10
10
Section 5
1
5
As available
As available
for 1 hour
12 hours
As available
8
As available
5-1