NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2010033
SUBJ: SVN51 (PRN20) UNUSABLE JDAY 046/0806 - JDAY 050/2146
1.     NANU TYPE: UNUSABLE
       NANU NUMBER: 2010033
       NANU DTG: 192156Z FEB 2010
       REFERENCE NANU: 2010029
       REF NANU DTG: 150937Z FEB 2010
       SVN: 51
       PRN: 20
       START JDAY: 046
       START TIME ZULU: 0806
       START CALENDAR DATE: 15 FEB 2010
       STOP JDAY: 050
       STOP TIME ZULU: 2146
       STOP CALENDAR DATE: 19 FEB 2010

2.  CONDITION: GPS SATELLITE SVN51 (PRN20) WAS UNUSABLE ON JDAY 046
    (15 FEB 2010) BEGINNING 0806 ZULU UNTIL JDAY 050 (19 FEB 2010)
    ENDING 2146 ZULU.

3.  POC: CIVILIAN - NAVCEN AT 703-313-5900, HTTPS://WWW.NAVCEN.USCG.GOV
    MILITARY - GPS OPERATIONS CENTER at HTTP://GPS.AFSPC.AF.MIL/GPSOC, DSN 560-2541,
    COMM 719-567-2541, gps_support@schriever.af.mil, HTTPS://gps.afspc.af.mil
    MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN 276-3514,
    COMM 805-606-3514, JSPOCCOMBATOPS@VANDENBERG.AF.MIL