NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2010074 SUBJ: SVN60 (PRN23) FORECAST OUTAGE JDAY 112/1700 - JDAY 113/0500 1 NANU TYPE: FCSTMX NANU NUMBER: 2010074 NANU DTG: 161709Z APR 2010 REFERENCE NANU: N/A REF NANU DTG: N/A SVN: 60 PRN: 23 START JDAY: 112 START TIME ZULU: 1700 START CALENDAR DATE: 22 APR 2010 STOP JDAY: 113 STOP TIME ZULU: 0500 STOP CALENDAR DATE: 23 APR 2010

1. CONDITION: GPS SATELLITE SVN60 (PRN23) WILL BE UNUSABLE ON JDAY 112 (22 APR 2010) BEGINNING 1700 ZULU UNTIL JDAY 113 (23 APR 2010) ENDING 0500 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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