Garmin G3X Pilot’s Guide
190-01115-00 Rev. K
214
Hazard Avoidance
System
Overview
Flight
Instruments
EIS
CNS
Interface
GPS
Navigation
Flight
Planning
Hazar
d
Avoidance
Additional
Featur
es
AFCS
Annun/Alerts
Appendix
Index
If, for any reason, a weather product is not refreshed within the Expiration Time
intervals (see table), the data is considered expired and is removed from the display.
This ensures that only data that is consistent with FIS-B broadcast data is displayed.
If more than half of the expiration time has elapsed, the color of the product age
displayed changes to yellow. The system displays dashes instead of a product age
when a product has expired. If a weather product is not available or has not been
received, the system displays ‘N/A’ instead of a product age.
The table below shows the FIS-B weather expiration time and the broadcast interval.
The broadcast interval represents the interval at which FIS-B GBTs broadcast new
signals that may or may not contain new weather data. It does not represent the rate
at which weather data is updated or new content is received by the GDL 39.
FIS-B Products
Expiration
Time
Update Interval
(Minutes)
Broadcast
Interval
(Minutes)
NEXRAD Composite
Reflectivity (CONUS)
60 minutes
~5 minutes precipitation
mode
10 minutes for clear air
15
NEXRAD Composite
Reflectivity (Regional)
60 minutes
As Available
2.5
METAR
8 hours
1 minute (where available),
As Available otherwise
5
TAF
12 hours
8 hours
10
AIRMET
12 hours
As Available
5
SIGMET
12 hours
As Available, then at 15
minute intervals for 1 hour
5
PIREP
8 hours
As Available
10
Winds and
Temperatures Aloft
12 hours
12 hours
10
NOTAM (D)/FDC
(Including TFRs)
12 hours
As Available
10
Weather Product Timing
Summary of Contents for G3X Touch
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