Nav aids

Coast guard advises dgps and loran users of the potential for computer related problems during the…

The U.S · HYDROPAC 874/99

issued
1999-09-02 17:29Z
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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