NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2021056

SUBJ: SVN57 (PRN29) FORECAST OUTAGE JDAY 337/0300 - JDAY 337/1500

1. NANU TYPE: FCSTDV

       NANU NUMBER: 2021056

       NANU DTG: 291607Z NOV 2021

       REFERENCE NANU: N/A

       REF NANU DTG: N/A

       SVN: 57

       PRN: 29

       START JDAY: 337

       START TIME ZULU: 0300

       START CALENDAR DATE: 03 DEC 2021

       STOP JDAY: 337

       STOP TIME ZULU: 1500

       STOP CALENDAR DATE: 03 DEC 2021

2. CONDITION: GPS SATELLITE SVN57 (PRN29) WILL BE UNUSABLE ON JDAY 337

    (03 DEC 2021) BEGINNING 0300 ZULU UNTIL JDAY 337 (03 DEC 2021)

    ENDING 1500 ZULU.

3. POC: CIVILIAN - NAVCEN AT 703-313-5900, HTTPS://WWW.NAVCEN.USCG.GOV

    MILITARY - GPS OPERATIONS CENTER at HTTPS://GPS.AFSPC.AF.MIL/GPSOC, DSN 560-2541,

    COMM 719-567-2541, gpsoperationscenter@us.af.mil, HTTPS://GPS.AFSPC.AF.MIL

    MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN 276-3526. COMM 805-606-3526.

   JSPOCCOMBATOPS@US.AF.MIL