Garmin 695 Manuale Utente

190-00919-00  Rev. G

126

When a FIS-B weather product is active on a map, the age of the data is displayed 

on the screen in the lower left corner.  The age of the product is based on the time 
difference between when the data was assembled on the ground and the current GPS 
time.  Weather products are broadcast at specific intervals (see broadcast interval in 
the table below).

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.

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