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    « Icon A5 Video Shows Spin Resistance | Main | Dealing with the Marine Layer – Having a Plan B »

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    Brad Koehn

    Is there a way to tell how old the _data_ is that's being displayed on Serius-XM or FIS-B? Or is that (crucial) information not available in the cockpit?

    Max Trescott

    Brad, in a word, no. The time delay depends upon whether the radar site operator has selected “clear air mode” or “precipitation mode.” My G1000 book goes into more detail about these modes.
    Minimum age by the time data hits your screen in precip mode is probably around 8 minutes. In clear air mode, it's probably around a minimum of 13 minutes old. You would need to add these numbers to the "Age" shown on your screen to estimate how old the data is.

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