NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2014087 SUBJ: SVN51 (PRN20) FORECAST OUTAGE JDAY 350/1700 - JDAY 351/0500 1 NANU TYPE: FCSTDV NANU NUMBER: 2014087 NANU DTG: 041740Z DEC 2014 REFERENCE NANU: N/A REF NANU DTG: N/A SVN: 51 PRN: 20 START JDAY: 350 START TIME ZULU: 1700 START CALENDAR DATE: 16 DEC 2014 STOP JDAY: 351 STOP TIME ZULU: 0500 STOP CALENDAR DATE: 17 DEC 2014

1. CONDITION: GPS SATELLITE SVN51 (PRN20) WILL BE UNUSABLE ON JDAY 350 (16 DEC 2014) BEGINNING 1700 ZULU UNTIL JDAY 351 (17 DEC 2014) ENDING 0500 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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