NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2008069
SUBJ: SVN51 (PRN20) FORECAST OUTAGE SUMMARY JDAY 200/1634 - JDAY 200/2326
1.     NANU TYPE: FCSTSUMM
        NANU NUMBER: 2008069
        NANU DTG: 190009Z JUL 2008
        REFERENCE NANU: 2008065
        REF NANU DTG: 111801Z JUL 2008
        SVN: 51
        PRN: 20
        START JDAY: 200
        START TIME ZULU: 1634
        START CALENDAR DATE: 18 JUL 2008
        STOP JDAY: 200
        STOP TIME ZULU: 2326
        STOP CALENDAR DATE: 18 JUL 2008

2.  CONDITION: GPS SATELLITE SVN51 (PRN20) WAS UNUSABLE ON JDAY 200
     (18 JUL 2008) BEGINNING 1634 ZULU UNTIL JDAY 200 (18 JUL 2008)
     ENDING 2326 ZULU.

3.  POC: CIVILIAN - NAVCEN AT 703-313-5900, HTTP://WWW.NAVCEN.USCG.GOV
     MILITARY - GPS OPERATIONS CENTER at HTTP://GPS.AFSPC.AF.MIL/GPSOC, DSN 560-2541,
     COMM 719-567-2541, gps_supp...@schriever.af.mil, HTTP://gps.afspc.af.mil
     MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN 276-9994,
     COMM 805-606-9994, JSPOCCOMBAT...@VANDENBERG.AF.MIL

UNCLASSIFIED
GPS OPERATIONAL ADVISORY        200.OA1
SUBJ: GPS STATUS      18 JUL 2008

1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM):
A. BLOCK I : NONE
B. BLOCK II: PRNS  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15
    PLANE   : SLOT D1, C2, D4, B5, C5, A6, A3, A1, E3, D2, B4, F3, F1, F2
    CLOCK   :      RB, CS, RB, RB, RB, RB, CS, CS, CS, RB, RB, RB, RB, RB
    BLOCK II: PRNS 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29
    PLANE   : SLOT B1, C4, E4, C3, E1, D3, E2, F4, D5, A5, F5, A4, B3, C1
    CLOCK   :      RB, RB, RB, RB, RB, RB, RB, RB, CS, RB, RB, CS, RB, RB
    BLOCK II: PRNS 30, 31, 32
    PLANE   : SLOT B2, A2, E5
    CLOCK   :      CS, RB, RB
2. CURRENT ADVISORIES AND FORECASTS :
A. FORECASTS:           FOR SEVEN DAYS AFTER EVENT CONCLUDES.
NANU          MSG DATE/TIME       PRN  TYPE         SUMMARY (JDAY/ZULU TIME START - STOP)

2008050       302217Z MAY 2008    06   FCSTDV       158/0800-159/1200
2008051       021944Z JUN 2008    25   FCSTMX       159/1700-160/0500
2008053       061802Z JUN 2008    06   FCSTSUMM     158/0849-158/1742
2008055       072008Z JUN 2008    25   FCSTSUMM     159/1726-159/2005
2008056       091954Z JUN 2008    25   FCSTMX       164/1600-164/2200
2008058       121858Z JUN 2008    25   FCSTSUMM     164/1626-164/1854
2008059       192112Z JUN 2008    08   FCSTDV       177/2330-178/1330
2008060       260525Z JUN 2008    08   FCSTSUMM     177/2338-178/0523
2008061       261402Z JUN 2008    32   FCSTDV       183/1400-184/1600
2008062       012248Z JUL 2008    32   FCSTSUMM     183/1412-183/2238
2008063       022048Z JUL 2008    04   FCSTDV       192/2000-193/0930
2008064       110208Z JUL 2008    04   FCSTSUMM     192/2009-193/0153
2008065       111801Z JUL 2008    20   FCSTDV       200/1615-201/0700
2008066       162109Z JUL 2008    05   FCSTDV       205/0100-205/1700
2008067       162224Z JUL 2008    16   FCSTMX       203/1530-204/0330
2008068       162236Z JUL 2008    19   FCSTMX       206/1830-207/0630
2008069       190009Z JUL 2008    20   FCSTSUMM     200/1634-200/2326
B. ADVISORIES:
NANU          MSG DATE/TIME       PRN  TYPE         SUMMARY (JDAY/ZULU TIME START - STOP)

2008054       071805Z JUN 2008    09   UNUSUFN      159/1751-/
2008057       092020Z JUN 2008    09   UNUSABLE     159/1751-161/2017
C. GENERAL:
NANU          MSG DATE/TIME       PRN  TYPE         SUMMARY (JDAY/ZULU TIME START - STOP)

3. REMARKS:
A. THE POINT OF CONTACT FOR GPS MILITARY OPERATIONAL SUPPORT IS THE GPS
OPERATIONS CENTER AT (719)567-2541 OR DSN 560-2541.
B. CIVILIAN:  FOR INFORMATION, CONTACT US COAST GUARD NAVCEN AT
COMMERCIAL (703)313-5900 24 HOURS DAILY AND INTERNET
HTTP://WWW.NAVCEN.USCG.GOV
C. MILITARY SUPPORT WEBPAGES CAN BE FOUND AT THE FOLLOWING
HTTP://GPS.AFSPC.AF.MIL/GPS OR HTTP://GPS.AFSPC.AF.MIL/GPSOC