Garmin GDL 88 Weather Radio User Manual


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5-5
190-01122-03 Rev. A
GDL 88 ADS-B Transceiver Pilot’s Guide
5.2 FIS-B TFRs
Temporary Flight Restrictions (TFRs) provide detailed information for local
short term restrictions. The update rate is approximately every 20 minutes.
NOTE: Some TFRs may not be shown or information may be incomplete. The
presented TFR information is only advisory in nature. Check official sources,
such as from preflight planning or Flight Service Station to determine more
complete TFR information.
5.3 FIS-B METARs
Whenenabled,graphicMETARs(METeorologicalAviationReports)areshown
as colored flags at airportsthatprovideMETARreports.PresstheMETARs key to
enableordisableMETARs.RefertotheLegendforadescriptionofthecolorcode.
The update rate is every five minutes.
METAR Symbol Description
VFR (ceiling greater than 3000 ft. AGL and
visibility greater than five miles)
Marginal VFR (ceiling 1000–3000 ft. AGL
and/or visibility three to five miles)
IFR (ceiling 500 to below 1000 ft. AGL and/or
visibility one mile to less than three miles)
Low IFR (ceiling below 500 ft. AGL or visibility
less than one mile)
Unknown
Table 5-2 METAR Symbols
5.4 FIS-B PIREPs
Pilot Weather Reports (PIREPs) provide timely weather information. When
significant weather conditions are reported or forecast, Air Traffic Control (ATC)
facilitiesarerequiredtosolicitPIREPs.APIREPmaycontainnon-forecastadverse
weather conditions, such as low in-flight visibility, icing conditions, wind shear,
andturbulence.PIREPsareissuedaseitherRoutine(UA)orUrgent(UUA).The
update rate is approximately every 20 minutes.
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