Welcome to the William J. Hughes Technical Center WAAS Test Team

  As of July 18, 2015 until further notice the UDRE for the WAAS AMR geostationary satellite (PRN 133) will be set to Not Monitored (NM).
This setting means that users can still use WAAS corrections from PRN 133 but that satellite cannot be used by WAAS users for ranging.

  User guides are now available for all our web tools.  For the tools in the left bar, click on the tool link, and the user guide is in the upper right corner.  The web application portal has the user guide link next to each tool.  The performance video user guides can be found under "Video Help".


Please use the the navigation bar at the left to view our products.  The real-time performance plots are created every three minutes, and all real-time plot pages update every two minutes.  The real-time plots show up to the minute WAAS performance.  The 24-hour performance plots show yesterdays performance using the total 24-hours of data.  Any daily plot page updates every 24 hours.  Real-time data files update every three minutes as well.  Performance videos show animated performance data for the previous 24-hour period.  They can be viewed in Windows media player.  Please see video help for further assistance.  Performance analysis reports are updated quarterly, and contain the most detailed analyses of GPS and WAAS performance.  The WAAS technical reports coincide with links contained in the PAN reports and give detailed analysis on specific problem occurrences.

  • Real-Time Interactive WAAS Performance Applications



William J. Hughes FAA Technical Center

Atlantic City International Airport, NJ 08405


Page Last Updated: July 31, 2015


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