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    GPS outage in southeast US?
    From: Lu Abel
    Date: 2011 Jan 21, 10:20 -0800
    https://www.faasafety.gov/files/notices/2011/Jan/GPS_Flight_Advisory_CSFTL11-01_Rel.pdf

    Does anyone know any more detail about this?  Eg, what sort of testing (ground based interference, satellite outages, ??)?

    One peculiar thing I noticed is that the affected area increases in size with altitude.

       
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