Garmin GDL 88 Series Pilots Guide - Page 29

5 WEATHER The Flight Information Services (FIS-B) function is capable of displaying textual and graphic weather information. No subscription for FIS-B services is required. FIS-B is based on a ground-to-air data link that requires the aircraft to be within reception range of the Ground Broadcast Transceiver (GBT). FIS-B weather 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 90 or at the 10 Temperatures Aloft end of the valid period 12 hours Pilot Weather 90 Report (PIREP) (Blue - Regular, Yellow - Urgent) 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 190-01122-03 Rev. E Garmin GDL 84/88 ADS-B Transceiver Pilot's Guide 5-1