NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015081 SUBJ: SVN60 (PRN23) FORECAST OUTAGE SUMMARY JDAY 254/0330 - JDAY 254/1001 1 NANU TYPE: FCSTSUMM NANU NUMBER: 2015081 NANU DTG: 111003Z SEP 2015 REFERENCE NANU: 2015079 REF NANU DTG: 032006Z SEP 2015 SVN: 60 PRN: 23 START JDAY: 254 START TIME ZULU: 0330 START CALENDAR DATE: 11 SEP 2015 STOP JDAY: 254 STOP TIME ZULU: 1001 STOP CALENDAR DATE: 11 SEP 2015

1. CONDITION: GPS SATELLITE SVN60 (PRN23) WAS UNUSABLE ON JDAY 254 (11 SEP 2015) BEGINNING 0330 ZULU UNTIL JDAY 254 (11 SEP 2015) ENDING 1001 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