Garmin GDL 88 manual FIS-B TFRs, FIS-B METARs, FIS-B PIREPs

5.2FIS-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.

5.3FIS-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

5.4FIS-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.

190-01122-03 Rev. A GDL 88 ADS-B Transceiver Pilot’s Guide 5-5