NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2025071
SUBJ: SVN80 (PRN01) UNUSABLE JDAY 278/1027 - JDAY 280/0020
1.     NANU TYPE: UNUSABLE
       NANU NUMBER: 2025071
       NANU DTG: 070023Z OCT 2025
       REFERENCE NANU: 2025070
       REF NANU DTG: 051043Z OCT 2025
       SVN: 80
       PRN: 01
       START JDAY: 278
       START TIME ZULU: 1027
       START CALENDAR DATE: 05 OCT 2025
       STOP JDAY: 280
       STOP TIME ZULU: 0020
       STOP CALENDAR DATE: 07 OCT 2025

2.  CONDITION: GPS SATELLITE SVN80 (PRN01) WAS UNUSABLE ON JDAY 278
    (05 OCT 2025) BEGINNING 1027 ZULU UNTIL JDAY 280 (07 OCT 2025)
    ENDING 0020 ZULU.

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