NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015054 SUBJ: SVN51 (PRN20) FORECAST OUTAGE JDAY 177/0230 - JDAY 177/1430 1 NANU TYPE: FCSTDV NANU NUMBER: 2015054 NANU DTG: 161556Z JUN 2015 REFERENCE NANU: N/A REF NANU DTG: N/A SVN: 51 PRN: 20 START JDAY: 177 START TIME ZULU: 0230 START CALENDAR DATE: 26 JUN 2015 STOP JDAY: 177 STOP TIME ZULU: 1430 STOP CALENDAR DATE: 26 JUN 2015

1. CONDITION: GPS SATELLITE SVN51 (PRN20) WILL BE UNUSABLE ON JDAY 177 (26 JUN 2015) BEGINNING 0230 ZULU UNTIL JDAY 177 (26 JUN 2015) ENDING 1430 ZULU

2. POC: CIVILIAN - NAVCEN AT 703-313-5900, HTTP://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 276-3514, COMM 805-606-3514, JSPOCCOMBATOPS@VANDENBERG AF MIL

To unsubscribe, visit: http://www navcen uscg gov/?pageName=listserverunsubscribe&srvr=Nanu