Garmin G1000H Bell 407GX Pilot's Guide - Page 323
Weather Product, Symbol, Expiration Time, Minutes, Refresh Rate, This Pilot's Guide shows
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HAZARD AVOIDANCE When a weather product is selected for display on the Weather Data Link (GFDS) Page, a box containing a symbol for the product and its age (in minutes) are shown in the upper right (Figure 6-45). If weather data has not been requested yet or is not available, 'N/A' is shown next to the product symbol instead of age. The age of the weather product is based on the time difference between when the data was assembled on the ground and the current GPS time. Weather products are updated continuously or refreshed at specific intervals (defined in the Refresh Rate column in Table 6-3). If for any reason, a weather product is not refreshed within the defined Expiration Time intervals (see Table 6-3), the data is considered expired and is removed from the display. The age of the expired product is replaced by dashes. If more than half of the expiration time has elapsed, the color of the product age changes to yellow. Table 6-3 shows the GFDS weather product symbols, the expiration time and the refresh rates. The refresh rate represents the interval at which the GFDS servers make available the most current known weather data. It does not necessarily represent the rate at which new content is received from weather sources. NOTE: The availability of specific weather products varies from region to region. This Pilot's Guide shows all weather products, regardless of availability in a specific area. Weather Product Symbol Expiration Time (Minutes) Radar Precipitation (PRECIP) 30 Infrared Satellite (IR SAT) 60 Datalink Lightning (DL LTNG) 30 SIGMETs/AIRMETs (SIG/AIR) 60 Meteorological Aerodrome Report (METARs) 90 Winds Aloft (WIND) 60 Pilot Weather Report (PIREPs) 90 Temporary Flight Restrictions (TFRs) no product image 60 Terminal Aerodrome Reports (TAFs) no product image 60 Refresh Rate (Minutes) U.S.: 3* Canada: 3*† Europe: 15 30 Continuous Continuous Continuous Continuous Continuous Continuous Continuous * The composite precipitation image is updated every 3 minutes, but individual radar sites may take between 3 and 10 minutes to provide new data. † Canadian radar precipitation data provided by Environment Canada. Table 6-3 GFDS Weather Product Symbols and Data Timing 190-01255-00 Rev. A Garmin G1000H™ Pilot's Guide for the Bell 407GX 311