NOTICE ADVISORY TO NAVSTAR USERS (NANU) 1999085
SUBJ: SVN18 (PRN18) FORECAST OUTAGE JDAY 166/0245 - JDAY 166/1200
1.     NANU TYPE: FCSTMX
       NANU NUMBER: 1999085
       NANU DTG: 110254Z JUN 1999
       REFERENCE NANU: N/A
       REF NANU DTG: N/A
       SVN: 18
       PRN: 18
       START JDAY: 166
       START TIME ZULU: 0245
       START CALENDAR DATE: 15 JUN 1999
       STOP JDAY: 166
       STOP TIME ZULU: 1200
       STOP CALENDAR DATE: 15 JUN 1999

2.  CONDITION: GPS SATELLITE SVN18 (PRN18) WILL BE UNUSABLE ON JDAY 166
    (15 JUN 1999) BEGINNING 0245 ZULU UNTIL JDAY 166 (15 JUN 1999)
    ENDING 1200 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