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Nationwide Differential GPS (NDGPS)
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The Navigation Center appreciates your reports regarding service degradations, outages, or other incidents or anomalies. Please answer the questions below. Some fields are required for submission, but all personal data will be kept private and will only be used to contact you in the event that we need more information or if clarification is required. Please be as complete as possible when reporting an incident. Thank you!

Privacy Information: The privacy of our customers has always been of the most importance to the Navigation Center. The NAVCEN has a long history of protecting your privacy and our concern for your privacy is no different in the electronic age. Our Internet privacy policy is:

  • You do not have to give us personal information to visit our site.
  • We will collect personally identifiable information (name, email address, telephone number) only if specifically and knowingly provided by you.
  • Any information provided will solely be used to resolve the problem that you are reporting.  Resolution of the reported problem may entail the sharing of the information provided with other U.S. Government Agencies.  These agencies may contact you directly in order to expedite resolution of the reported problem.
  • All personally identifiable information provided will be kept internal to the U.S. Government.

If you are experiencing DGPS issues relating to positioning, navigation, timing or signals please proceed to fill out a DGPS outage report using the form below.

* Denotes a required field

1) *
2) *
3) *
4) and if additional information is necessary:
5) *What was the start time and date of the DGPS outage?
6) *
7) * Where did the outage occur? (LAT/LONG; Nearest City or landmark)
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