NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2026006
SUBJ: SVN51 (PRN20) DECOMMISSIONING JDAY 008/2200 
1.    NANU TYPE: DECOM
       NANU NUMBER: 2026006
       NANU DTG: 082218Z JAN 2026
       REFERENCE NANU: 2026005
       REF NANU DTG: 051805Z JAN 2026
       SVN: 51
       PRN: 20
       UNUSABLE START JDAY: 008
       UNUSABLE START TIME ZULU: 1804
       UNUSABLE START CALENDAR DATE: 08 JAN 2026
       DECOMMISSIONING START JDAY: 008
       DECOMMISSIONING START TIME ZULU: 2200
       DECOMMISSIONING START CALENDAR DATE: 08 JAN 2026

2.  CONDITION: GPS SATELLITE SVN51 (PRN20) WAS UNUSABLE AS OF JDAY 008 (08 JAN 2026)
     AND REMOVED FROM THE GPS CONSTELLATION ON JDAY 008 (08 JAN 2026).

3.  POC: CIVILIAN - NAVCEN AT 703-313-5900, HTTPS://WWW.NAVCEN.USCG.GOV
    MILITARY - GPS WARFIGHTER COLLABORATION CELL at HTTPS://GWCC-WS.CCE.AF.MIL/GPSOC, DSN 560-2541,
    COMM 719-567-2541, gpsoperationscenter@us.af.mil, HTTPS://GWCC-WS.CCE.AF.MIL 
    MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN 276-3526. COMM 805-606-3526.
   JSPOCCOMBATOPS@US.AF.MIL