Garmin aera 660 aera 660 Pilot s Guide - Page 98
FIS-B WEATHER PRODUCTS, FIS-B Products, Expiration, Update Interval, Minutes, Broadcast, Interval
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Overview Navigation Additional Features Hazard Avoidance Flight Planning Hazard Avoidance FIS-B WEATHER PRODUCTS FIS-B weather broadcasts are updated regularly and may take approximately ten minutes to transmit all available weather data. Therefore, weather data is not immediately available. No pilot action is required to receive FIS-B weather information. Weather product status can be viewed on the dedicated Weather Page,or the Data Link Page from the Tools menu. When a FIS-B weather product is active on a map, the age of the data is displayed on the screen in the lower left corner. The age of the product is based on the time difference between when the data was assembled on the ground and the current GPS time. Weather products are broadcast at specific intervals (see broadcast interval in the table below). If, for any reason, a weather product is not refreshed within the Expiration Time intervals (see table), the data is considered expired and is removed from the display. This ensures that only data that is consistent with FIS-B broadcast data is displayed. If more than half of the expiration time has elapsed, the color of the product age displayed changes to yellow. The system displays dashes instead of a product age when a product has expired. The table below shows the FIS-B weather expiration time and the broadcast interval. The broadcast interval represents the interval at which FIS-B GBtTs broadcast new signals that may or may not contain new weather data. It does not represent the rate at which weather data is updated or new content is received by weather/traffic devices. FIS-B Products NEXRAD Composite Reflectivity (CONUS) NEXRAD Composite Reflectivity (Regional) Expiration Time 60 minutes 60 minutes Update Interval (Minutes) ~5 minutes precipitation mode 10 minutes for clear air As Available Broadcast Interval (Minutes) 15 2.5 Appendices Index 82 Garmin aera 660 Pilot's Guide 190-02017-20 Rev. A