Nav aids
Coast guard advises dgps and loran users of the potential for computer related problems during the…
The U.S · NAVAREA IV 304/99
- issued
- 1999-09-02 17:04Z
- status
- cancelled 1999-09-10 06:00Z (archive)
- authority
- NAVCEN ALEXANDRIA GPS BNM 661/99 021635Z SEP 99
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. THE U.S. COAST GUARD ADVISES DGPS AND LORAN USERS OF THE POTENTIAL FOR COMPUTER RELATED PROBLEMS DURING THE END-OF-FILE TRANSITION PERIOD (08 SEP 1999 - 09 SEP 1999). DURING THIS PERIOD, SOME COMPUTERS COULD EXPERIENCE DIFFICULTIES WHILE ATTEMPTING TO READ THE DATE 9/9/99. THIS IS BECAUSE SOME SOFTWARE PROGRAMS USE 9999 TO DESIGNATE AN END-OF-FILE OR PROGRAM TERMINATION COMMAND. 2. THE U.S. COAST GUARD HAS TESTED THE DGPS AND LORAN SYSTEM COMPUTERS AND DO NOT ANTICIPATE PROBLEMS. HOWEVER, DISRUPTION OF SUPPORT SERVICES SUCH AS COMMERCIAL POWER, VOICE AND DATA COMMUNICATION NETWORKS, MANY OF WHICH THE U.S. COAST GUARD HAS LITTLE OR NO CONTROL OVER, COULD AFFECT THE AVAILABILITY OF DGPS AND LORAN. ALL USERS ARE URGED TO HAVE CONTINGENCY PLANS SHOULD THESE SYSTEMS BE AFFECTED. 3. IN ADDITION TO U.S. COAST GUARD RADIONAVIGATION SERVICES, USERS SHOULD BE AWARE THAT COMPUTER APPLICATIONS, SUCH AS ELECTRONIC CHARTING SYSTEMS, COULD ALSO BE AFFECTED. 4. QUESTIONS CONCERNING SPECIFIC COMPUTER APPLICATIONS SHOULD BE ADDRESSED DIRECTLY TO THE APPLICATIONS MANUFACTURER. 5. FOR FURTHER INFORMATION, PLEASE CONTACT THE U.S. COAST GUARD NAVIGATION CENTER AT (703) 313-5900 OR HTTP://WWW.NAVCEN.USCG.MIL. 6. CANCEL THIS MSG 10 SEP.
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