GPS OPERATIONAL ADVISORY        171.OA1
SUBJ: GPS STATUS 20 JUN 2005
1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM):
A. BLOCK I : NONE
B. BLOCK II: PRNS  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 13, 14, 15
   PLANE   : SLOT F6, D7, C2, D4, B4, C1, C4, A3, A1, E3, D2, F3, F1, D5
   CLOCK   :      CS, RB, CS, RB, CS, RB, RB, CS, CS, CS, RB, RB, RB, CS
   BLOCK II: PRNS 16, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30
   PLANE   : SLOT B1, E4, C3, E1, D3, E2, F4, D1, A2, F2, A4, B3, F5, B2
   CLOCK   :      RB, RB, RB, RB, RB, RB, RB, CS, CS, RB, RB, RB, RB, RB
   BLOCK II: PRNS 31
   PLANE   : SLOT C5
   CLOCK   :      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)
2005085       121355Z MAY 2005    05   FCSTDV       137/2015-138/0815
2005090       180747Z MAY 2005    05   FCSTEXTD     137/2015-/
2005091       180815Z MAY 2005    05   FCSTSUMM     137/2032-138/0808
2005095       101841Z JUN 2005    02   FCSTDV       167/1115-167/2315
2005097       162033Z JUN 2005    02   FCSTSUMM     167/1131-167/2029
B. ADVISORIES:
NANU          MSG DATE/TIME       PRN  TYPE         SUMMARY (JDAY/ZULU TIME START - STOP)
2005055       141648Z APR 2005    31   UNUSUFN      104/1634-/
2005088       142024Z MAY 2005    27   UNUSUFN      134/1955-/
2005092       311738Z MAY 2005    27   UNUSABLE     134/1955-151/1749
2005093       090405Z JUN 2005    26   UNUSUFN      160/0337-/
2005096       132326Z JUN 2005    26   UNUSABLE     160/0354-164/2321
C. GENERAL:
NANU          MSG DATE/TIME       PRN  TYPE         SUMMARY (JDAY/ZULU TIME START - STOP)
2005089       161445Z MAY 2005         GENERAL      /-/
2005094       090433Z JUN 2005         GENERAL      /-/
3. REMARKS:
A. THE POINT OF CONTACT FOR GPS MILITARY OPERATIONAL SUPPORT IS THE GPS
SUPPORT 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://WWW.SCHRIEVER.AF.MIL/GPS OR HTTP://WWW.SCHRIEVER.AF.MIL/GPSSUPPORTCENTER