Garmin GDL 88 Pilot's Manual

Also see for GDL 88: Installation manual

Garmin GDL 88 Pilot's Manual Manual pdf 34 page image

5-6Garmin GDL 88 ADS-B Transceiver Pilot’s Guide 190-01122-03 Rev. CCombined NEXRADRegional NEXRAD data within 500 NM of the aircraft location and CONUSNEXRAD data everywhere else. The two types of NEXRAD are separated by awhite stippled border. This boundary is updated whenever new Regional orCONUS NEXRAD data is received.5.2 FIS-B TFRsTemporary Flight Restrictions (TFRs) provide detailed information for localshort term restrictions. The update rate is approximately every 20 minutes.NOTE: Some TFRs may not be shown or information may be incomplete. Thepresented TFR information is only advisory in nature. Check official sources,such as from preflight planning or Flight Service Station to determine morecomplete TFR information.5.3 FIS-B METARsWhen enabled, graphic METARs (METeorological Aviation Reports) are shownas colored flags at airports that provide METAR reports. Press the METARs key toenable or disable METARs. Refer to the Legend for a description of the color code.The update rate is every five minutes.METAR Symbol DescriptionVFR (ceiling greater than 3000 ft. AGL and visibility greater thanfive miles)Marginal VFR (ceiling 1000–3000 ft. AGL and/or visibility three tofive miles)IFR (ceiling 500 to below 1000 ft. AGL and/or visibility one mile toless than three miles)Low IFR (ceiling below 500 ft. AGL or visibility less than one mile)UnknownTable 5-2 METAR Symbols