Official U.S. Government information about theGPS User Support
For Civilian Users
Civilian GPS user support comes in a variety of forms. Please select the type of support you are seeking from the list below. Most of these links lead to the U.S. Coast Guard Navigation Center (NAVCEN), the designated point of contact within the U.S. government for civilian GPS user support.
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- Global Positioning System (GPS)
- Find out the operational status of the GPS satellites
- Find out about known GPS satellite outages
- Find out about known GPS service interruptions
- Look up Notices to Airmen (NOTAMs) about GPS service disruptions
- Report a GPS service problem
- Fix a map error on your GPS device
- Sign up for GPS email notices
- Participate in the Civil GPS Service Interface Committee (CGSIC)
- Nationwide Differential GPS (NDGPS)
- Wide Area Augmentation System (WAAS)
- Other
The Federal Aviation Administration (FAA) uses the NOTAM process to disseminate information about reported GPS service problems to the aviation community. Commercial and general aviation pilots who wish to report GPS navigation outages or significant issues should contact air traffic control as prescribed in appropriate directives. International aviation users in need of GPS support should contact NAVCEN.
For Military Users
The focal point within the U.S. Department of Defense (DoD) for operational issues and questions concerning military use of GPS is the GPS Operations Center (GPSOC), part of Air Force Space Command. The GPSOC, located at Schriever Air Force Base, Colorado, provides DoD and allied GPS users worldwide with anomaly reports and other information 24 hours a day, seven days a week.
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The GPSOC is responsible for:
- Receiving reports and coordinating responses to radio frequency interference in the use of GPS in military operations;
- Providing prompt responses to DoD user problems or questions concerning GPS;
- Providing official USSTRATCOM monitoring of GPS performance provided to DoD users on a global basis;
- Providing tactical support for planning and assessing military missions involving the use of GPS.
As the DoD's focal point for GPS operational matters, the GPSOC serves as the interface to the civil community, through the NAVCEN and FAA.
