1. CGSIC 43rd Meeting Arlington, Virginia 10 March 2004

2. Background USCGNISFAANOCC USSPCGSC The Triad The Triad Military Users All other users Aviation Users

3. Outage Reporting Disruption to GPS service should be reported to: –USCG NAVCEN –http://www.navcen.uscg.gov –On-line form An attempt will be made to identify the problem Response to user

4.  GPS General Information  GPS Status Reports  GPS Service Interruptions  GPS Almanac Information  Precise Ephemeris Info  Subscribe to Listserver Messages  Selective Availability  GPS Modernization  Report a GPS Problem  Frequently Asked Questions  Augmentation Systems  Reference Information GPS Page Choices

5. Outage Reporting 1. What indicated there was a problem? 2. How many Satellites were being tracked? 3. What SVs were being track? 4. Elevation of the receiver antenna? 5. Duration and number (approximate) of known occurrences? 6. Did any operator (you) action help? 7. Location of problem? * 8. Closest geographic region* 9. Type of equipment? (receiver model, antenna type, etc...) 10. Type of installation? (boat, car, handheld, plane) 11. Other probable causes? * 12. What was the receiver being used for at time of occurrence? 13. Contact Information

6. Navigation Information Service http://www.navcen.uscg.gov http://www.navcenter.org/ (mirror site) E-mail: nisws@navcen.uscg.mil Phone: +1 703 313 5900 Fax: +1 703 313 5920