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

February 28th - We are performing some planned database maintenance. Many of our web tools will be unavailable during this time. Thank you for your interest in our products.
In May 2022 the WAAS program will enter a new geostationary satellite into service. This new satellite, PRN 135, will replace the current WAAS PRN 138 satellite. PRN 135 will begin WAAS transmissions on April 26th, 2022. The new satellite is the Galaxy 30 located at 125 degrees west longitude. PRN 138 will cease WAAS transmissions on May 17th, 2022.
Real-Time Plots

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.

Real-Time Gallery
24-Hour Performance

The 24-hour performance plots show yesterday's performance using the total 24-hours of data. Any daily plot page updates every 24 hours.

24-Hour Gallery
Performance Videos

Performance videos show animated performance data for the previous 24-hour period.

Video Gallery
Real-Time Data

Real-Time Satellite Corrections, IGP GIVEs and Delays, and the WAAS GEO Footprints are updated every three minutes.

Performance Reporting

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.

William J. Hughes Technical Center

Atlantic City International Airport, NJ 08405

Contact WAAS Team