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NTL 99-NO5 Effective Date: May 21, 1999
Recission Date: January 31, 2000

Notice to Lessees and Operators (NTL) of Federal Oil, Gas,
and Sulphur Leases in the Outer Continental Shelf

Year 2000 (Y2K) and End of Week (EOW) Compliance
of Global Positioning System (GPS) Receivers

NOTE: NTL 99-N05 is available for download in Adobe's Portable Document Format (PDF).

On April 13, 1999, the North American Aerospace Defense Command (NAADC) and the United States Space Command (USSC) jointly issued a news release. The news release discusses the Global Positioning System and two upcoming events that may affect its performance--the GPS EOW rollover and Y2K issues. Of these two events, the EOW rollover occurs sooner. On August 22, 1999, any non-compliant GPS receiver will fail to operate.

Since the GPS is used extensively in OCS offshore oil, gas, and marine activities, MMS is utilizing this NTL to advise all OCS operators and contractors to visit the web sites listed below and review the NAADC and USSC news release and other issues. The task of certifying individual GPS equipment is the responsibility of the user. These web sites should provide the recipients of this NTL enough information to pursue an appropriate course of action.

Website listings:

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U.S. Air Force GPS Joint Program Office

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U.S.C.G. Navigation Center

Since the subject of this NTL is an advisory issue, please direct all technical questions concerning the GPS to the websites listed. Distribute this NTL to your contractors, as appropriate.

Date: 21 May 1999 cksign.gif (2123 bytes)

Carolita U. Kallaur
Associate Director for
Offshore Minerals Management


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Last Updated: 02/01/2006, 12:39 PM

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