NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2001081
SUBJ: SVN54 (PRN18) FORECAST OUTAGE JDAY 180/1800 - JDAY 181/0600
1.     NANU TYPE: FCSTMX
       NANU NUMBER: 2001081
       NANU DTG: 211925Z JUN 2001
       REFERENCE NANU: N/A
       REF NANU DTG: N/A
       SVN: 54
       PRN: 18
       START JDAY: 180
       START TIME ZULU: 1800
       START CALENDAR DATE: 29 JUN 2001
       STOP JDAY: 181
       STOP TIME ZULU: 0600
       STOP CALENDAR DATE: 30 JUN 2001

2.  CONDITION: GPS SATELLITE SVN54 (PRN18) WILL BE UNUSABLE ON JDAY 180
    (29 JUN 2001) BEGINNING 1800 ZULU UNTIL JDAY 181 (30 JUN 2001)
    ENDING 0600 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