NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2010041 NANU TYPE: GENERAL 
*** GENERAL MESSAGE TO ALL GPS USERS ***
The purpose of this notification is to inform users of an upcoming event related to the GPS satellite constellation.  The 2nd Space Operations Squadron will be installing a ground software upgrade on 5 March 2010 (J064).  There are no planned GPS satellite outages for this activity, and the broadcast navigation signal will remain IS-GPS-200 compliant. If military or civil users encounter any user equipment problems they feel are related to this minor software change, please call the GPSOC (military) or NAVCEN (civil) immediately.
*** GENERAL MESSAGE TO ALL GPS USERS ***

   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