All services currently hosted at raimprediction.net are being migrated to the http://sapt.faa.gov web site. When the migration is complete all services currently hosted at raimprediction.net will be discontinued. (Note that this will also affect all variations of raimprediction.net, including: www.raimprediction.net, raim-prediction.net and www.raim-prediction.net.)
The web site sapt.faa.gov currently hosts the ADS-B Service Availability Prediction Tool (SAPT), a service that is similar in concept to the RAIM prediction service but does not focus on either RAIM or the FAA Order AC90-100A. Going forward, this site will host both the ADS-B prediction service and the RAIM prediction service.
The new web site, with integrated RAIM prediction services, will be operational soon. A test web site is presently available for use at:
New users may find the 'Getting Started' page for RAIM to be useful.
Please note that the new web site will host the automated, XML-based web service for RAIM route-of-flight predictions. However, the RAIM interactive flight planning form will be discontinued. More information about the XML web service is available at:
For more information or help with specific issues, and for subscribing to our announcement mailing list, please contact the SAPT Help Desk by e-mail:
You may alternately use the convenient online feedback form:
Grid Display Tool
ICAO Flight Plan Tool
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** For AC90-100A Compliance, Non-Precision Approaches do not require a RAIM Prediction.