Garmin GDL 88 Weather Radio User Manual


  Open as PDF
of 48
 
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
 previous next