NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2010076 SUBJ: SVN54 (PRN18) FORECAST OUTAGE SUMMARY JDAY 111/1416 - JDAY 111/1807 1 NANU TYPE: FCSTSUMM NANU NUMBER: 2010076 NANU DTG: 211830Z APR 2010 REFERENCE NANU: 2010065 REF NANU DTG: 081926Z APR 2010 SVN: 54 PRN: 18 START JDAY: 111 START TIME ZULU: 1416 START CALENDAR DATE: 21 APR 2010 STOP JDAY: 111 STOP TIME ZULU: 1807 STOP CALENDAR DATE: 21 APR 2010

1. CONDITION: GPS SATELLITE SVN54 (PRN18) WAS UNUSABLE ON JDAY 111 (21 APR 2010) BEGINNING 1416 ZULU UNTIL JDAY 111 (21 APR 2010) ENDING 1807 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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