NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2011056 SUBJ: SVN53 (PRN17) FORECAST OUTAGE JDAY 223/1740 - JDAY 224/0540 1 NANU TYPE: FCSTDV NANU NUMBER: 2011056 NANU DTG: 051456Z AUG 2011 REFERENCE NANU: N/A REFERENCE NANU DTG: N/A SVN: 53 PRN: 17 START JDAY: 223 START TIME ZULU: 1740 START CALENDAR DATE: 11 AUG 2011 STOP JDAY: 224 STOP TIME ZULU: 0540 STOP CALENDAR DATE: 12 AUG 2011

1. CONDITION: GPS SATELLITE SVN53 (PRN17) WILL BE UNUSABLE ON JDAY 223 (11 AUG 2011) BEGINNING 1740 ZULU UNTIL JDAY 224 (12 AUG 2011) ENDING 0540 ZULU

2. 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

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