The FAA has begun depicting stadiums that are covered by the blanket TFR for major sporting events–that is, stadiums with a capacity of at least 30,000 seats. The new stadium symbol, a red diamond with the label STADIUM or STADIUMS, appears VFR sectional and terminal area charts as shown in the examples from the Seattle charts below.
The new symbol isn’t described in the current edtion of the Aeronautical Chart User’s Guide, but it does appear in the legend of updated VFR charts.
You can find more information about this new symbol in document ACF-CG RD 17-02-311 (PDF) at the Aeronautical Charting Forum.
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