Garmin GDL 88 User Guide - Page 29

Weather

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5 WEATHER The Flight Information Services (FIS-B) function is capable of displaying textual and graphic weather information with GDL 88 installations. No subscription for FIS-B services is required with the GDL 88. The FIS-B Function is based on a ground-to-air data link and requires that the appropriate ground systems are broadcasting weather data and the aircraft is within reception range of the Ground Broadcast Transceiver (GBT). The products are transmitted from the UAT (978 MHz) ground stations on a regular basis, in accordance with the following table: Weather Product Expiration Transmission Update Interval (Minutes) Time Interval (Minutes) (Minutes) CONUS NEXRAD 60 15 15 Regional NEXRAD 30 2.5 5 AIRMETs 60 5 As Available (Typically 20 minutes) SIGMETs 60 5 As Available (Typically 20 minutes), then at 15 minute intervals for 1 hour METARs 90 5 1 minute (where available), As Available otherwise (Typically ≤ 20 minutes) Winds and 90 or at the 10 Temperatures Aloft end of the valid period 12 hours Pilot Weather 90 Report (PIREP) (Blue - Regular, Yellow - Urgent) 10 As available (Typically 20 minutes) TAFs 60 10 8 hours NOTAMs 60 10 As available (Typically 20 minutes) Table 5-1 FIS-B Weather Products and Aging 190-01122-03 Rev. A GDL 88 ADS-B Transceiver Pilot's Guide 5-1

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5-1
190-01122-03
Rev. A
GDL 88 ADS-B Transceiver Pilot’s Guide
5
WEATHER
The Flight Information Services (FIS-B) function is capable of displaying textual
and graphic weather information with GDL 88 installations. No subscription for
FIS-B services is required with the GDL 88.
The FIS-B Function is based on a ground-to-air data link and requires that
the appropriate ground systems are broadcasting weather data and the aircraft is
within reception range of the Ground Broadcast Transceiver (GBT).
The products are transmitted from the UAT (978 MHz) ground stations on a
regular basis, in accordance with the following table:
Weather Product
Expiration
Time
(Minutes)
Transmission
Interval
(Minutes)
Update Interval (Minutes)
CONUS NEXRAD
60
15
15
Regional NEXRAD
30
2.5
5
AIRMETs
60
5
As Available
(Typically 20 minutes)
SIGMETs
60
5
As Available (Typically 20
minutes), then at 15 minute
intervals for 1 hour
METARs
90
5
1 minute (where available),
As Available otherwise
(Typically
≤
20 minutes)
Winds and
Temperatures Aloft
90 or at the
end of the
valid period
10
12 hours
Pilot Weather
Report (PIREP)
(Blue - Regular,
Yellow - Urgent)
90
10
As available
(Typically 20 minutes)
TAFs
60
10
8 hours
NOTAMs
60
10
As available
(Typically 20 minutes)
Table 5-1
FIS-B Weather Products and Aging