NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2001061
SUBJ: SVN54 (PRN18) UNUSABLE JDAY 112/1705 - JDAY 114/0158
1.     NANU TYPE: UNUSABLE
       NANU NUMBER: 2001061
       NANU DTG: 240211Z APR 2001
       REFERENCE NANU: 2001060
       REF NANU DTG: 221800Z APR 2001
       SVN: 54
       PRN: 18
       START JDAY: 112
       START TIME ZULU: 1705
       START CALENDAR DATE: 22 APR 2001
       STOP JDAY: 114
       STOP TIME ZULU: 0158
       STOP CALENDAR DATE: 24 APR 2001

2.  CONDITION: GPS SATELLITE SVN54 (PRN18) WAS UNUSABLE ON JDAY 112
    (22 APR 2001) BEGINNING 1705 ZULU UNTIL JDAY 114 (24 APR 2001)
    ENDING 0158 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