NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015025 SUBJ: SVN56 (PRN16) FORECAST OUTAGE SUMMARY JDAY 105/1608 - JDAY 105/2120 1 NANU TYPE: FCSTSUMM NANU NUMBER: 2015025 NANU DTG: 152134Z APR 2015 REFERENCE NANU: 2015024 REF NANU DTG: 092231Z APR 2015 SVN: 56 PRN: 16 START JDAY: 105 START TIME ZULU: 1608 START CALENDAR DATE: 15 APR 2015 STOP JDAY: 105 STOP TIME ZULU: 2120 STOP CALENDAR DATE: 15 APR 2015

1. CONDITION: GPS SATELLITE SVN56 (PRN16) WAS UNUSABLE ON JDAY 105 (15 APR 2015) BEGINNING 1608 ZULU UNTIL JDAY 105 (15 APR 2015) ENDING 2120 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

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