NOTICE ADVISORY TO NAVSTAR USERS (NANU) 1999067
SUBJ: SVN23 (PRN23) FORECAST OUTAGE SUMMARY JDAY 137/1650 - JDAY 137/2156
1.     NANU TYPE: FCSTSUMM
       NANU NUMBER: 1999067
       NANU DTG: 172208Z MAY 1999
       REFERENCE NANU: 1999062
       REF NANU DTG: 131939Z MAY 1999
       SVN: 23
       PRN: 23
       START JDAY: 137
       START TIME ZULU: 1650
       START CALENDAR DATE: 17 MAY 1999
       STOP JDAY: 137
       STOP TIME ZULU: 2156
       STOP CALENDAR DATE: 17 MAY 1999

2.  CONDITION: GPS SATELLITE SVN23 (PRN23) WAS UNUSABLE ON JDAY 137
    (17 MAY 1999) BEGINNING 1650 ZULU UNTIL JDAY 137 (17 MAY 1999)
    ENDING 2156 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