NOTICE ADVISORY TO NAVSTAR USERS (NANU) 1998122
SUBJ: SVN23 (PRN23) FORECAST OUTAGE JDAY 251/1615 - JDAY 252/0415
1.     NANU TYPE: FCSTDV
       NANU NUMBER: 1998122
       NANU DTG: 032249Z SEP 1998
       REFERENCE NANU: N/A
       REF NANU DTG: N/A
       SVN: 23
       PRN: 23
       START JDAY: 251
       START TIME ZULU: 1615
       START CALENDAR DATE: 08 SEP 1998
       STOP JDAY: 252
       STOP TIME ZULU: 0415
       STOP CALENDAR DATE: 09 SEP 1998

2.  CONDITION: GPS SATELLITE SVN23 (PRN23) WILL BE UNUSABLE ON JDAY 251
    (08 SEP 1998) BEGINNING 1615 ZULU UNTIL JDAY 252 (09 SEP 1998)
    ENDING 0415 ZULU.

3.  POC: CIVILIAN - NAVCEN AT (703)313-5900, HTTP://WWW.NAVCEN.USCG.MIL
    MILITARY - LT BRIAN BARKER, 2 SOPS NAVIGATION ANALYST, DSN 560-6378,
    COMM 719-567-6378, GPS@SCHRIEVER.AF.MIL, HTTP://WWW.SCHRIEVER.AF.MIL/GPS