NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2010127 SUBJ: SVN51 (PRN20) FORECAST OUTAGE SUMMARY JDAY 266/0508 - JDAY 266/1038 1 NANU TYPE: FCSTSUMM NANU NUMBER: 2010127 NANU DTG: 231151Z SEP 2010 REFERENCE NANU: 2010122 REF NANU DTG: 171606Z SEP 2010 SVN: 51 PRN: 20 START JDAY: 266 START TIME ZULU: 0508 START CALENDAR DATE: 23 SEP 2010 STOP JDAY: 266 STOP TIME ZULU: 1038 STOP CALENDAR DATE: 23 SEP 2010

1. CONDITION: GPS SATELLITE SVN51 (PRN20) WAS UNUSABLE ON JDAY 266 (23 SEP 2010) BEGINNING 0508 ZULU UNTIL JDAY 266 (23 SEP 2010) ENDING 1038 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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