NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2001077
SUBJ: SVN23 (PRN23) FORECAST OUTAGE JDAY 170/1630 - JDAY 171/0430
1.     NANU TYPE: FCSTMX
       NANU NUMBER: 2001077
       NANU DTG: 121646Z JUN 2001
       REFERENCE NANU: N/A
       REF NANU DTG: N/A
       SVN: 23
       PRN: 23
       START JDAY: 170
       START TIME ZULU: 1630
       START CALENDAR DATE: 19 JUN 2001
       STOP JDAY: 171
       STOP TIME ZULU: 0430
       STOP CALENDAR DATE: 20 JUN 2001

2.  CONDITION: GPS SATELLITE SVN23 (PRN23) WILL BE UNUSABLE ON JDAY 170
    (19 JUN 2001) BEGINNING 1630 ZULU UNTIL JDAY 171 (20 JUN 2001)
    ENDING 0430 ZULU.

3.  POC: CIVILIAN - NAVCEN AT (703)313-5900, HTTP://WWW.NAVCEN.USCG.MIL
    MILITARY - 1LT HERB KNIERIM, 2 SOPS NAVIGATION ANALYST, DSN 560-2744,
    COMM 719-567-2744, GPS@SCHRIEVER.AF.MIL, HTTP://WWW.SCHRIEVER.AF.MIL/GPS