NOTICE ADVISORY TO NAVSTAR USERS (NANU) 1999062
SUBJ: SVN23 (PRN23) FORECAST OUTAGE JDAY 137/1630 - JDAY 138/0430
1.     NANU TYPE: FCSTMX
       NANU NUMBER: 1999062
       NANU DTG: 131939Z MAY 1999
       REFERENCE NANU: N/A
       REF NANU DTG: N/A
       SVN: 23
       PRN: 23
       START JDAY: 137
       START TIME ZULU: 1630
       START CALENDAR DATE: 17 MAY 1999
       STOP JDAY: 138
       STOP TIME ZULU: 0430
       STOP CALENDAR DATE: 18 MAY 1999

2.  CONDITION: GPS SATELLITE SVN23 (PRN23) WILL BE UNUSABLE ON JDAY 137
    (17 MAY 1999) BEGINNING 1630 ZULU UNTIL JDAY 138 (18 MAY 1999)
    ENDING 0430 ZULU.

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