GPS OPERATIONAL ADVISORY        111.OA1
SUBJ: GPS STATUS 21 APR 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)
2005025       041447Z MAR 2005    24   FCSTMX       068/1545-069/0345
2005026       081600Z MAR 2005    24   FCSTDV       074/1245-075/1245
2005027       092057Z MAR 2005    24   FCSTSUMM     068/1559-068/1900
2005028       160248Z MAR 2005    24   FCSTSUMM     074/1310-075/0242
2005029       241508Z MAR 2005    26   FCSTDV       087/0145-087/1345
2005030       241625Z MAR 2005    26   FCSTRESCD    088/0145-088/1345
2005031       242107Z MAR 2005    13   FCSTMX       090/1300-091/0100
2005032       291013Z MAR 2005    26   FCSTSUMM     088/0209-088/1008
2005033       292040Z MAR 2005    21   FCSTMX       094/2230-095/1030
2005034       301838Z MAR 2005    11   FCSTMX       096/1945-097/0745
2005035       301847Z MAR 2005    14   FCSTMX       098/2130-099/0930
2005036       311936Z MAR 2005    13   FCSTSUMM     090/1546-090/1915
2005037       312040Z MAR 2005    21   FCSTRESCD    094/1600-095/0400
2005038       312044Z MAR 2005    14   FCSTRESCD    098/1400-099/0200
2005042       042150Z APR 2005    21   FCSTSUMM     094/1930-094/2141
2005043       052142Z APR 2005    11   FCSTRESCD    097/1400-098/0200
2005044       071339Z APR 2005    28   FCSTMX       101/1400-102/0200
2005045       071756Z APR 2005    11   FCSTSUMM     097/1526-097/1747
2005046       072013Z APR 2005    28   FCSTCANC     101/1400-/
2005047       081541Z APR 2005    14   FCSTCANC     098/1400-/
2005048       082249Z APR 2005    22   FCSTMX       103/1945-104/0745
2005049       082321Z APR 2005    20   FCSTMX       105/1700-106/0500
2005050       082325Z APR 2005    18   FCSTDV       104/1700-105/0500
2005052       140003Z APR 2005    22   FCSTSUMM     103/2111-103/2358
2005056       150017Z APR 2005    18   FCSTSUMM     104/1740-105/0026
2005057       152006Z APR 2005    20   FCSTSUMM     105/1747-105/1952
2005059       211319Z APR 2005    19   FCSTMX       115/1630-116/0430
B. ADVISORIES:
NANU          MSG DATE/TIME       PRN  TYPE         SUMMARY (JDAY/ZULU TIME START - STOP)
2005040       032310Z APR 2005    07   UNUSUFN      093/2238-/
2005041       040924Z APR 2005    31   UNUSABLE     363/0042-094/0913
2005051       131730Z APR 2005    07   UNUSABLE     093/2238-103/1740
2005053       141619Z APR 2005    31   UNUSUFN      104/1635-/
2005055       141648Z APR 2005    31   UNUSUFN      104/1634-/
C. GENERAL:
NANU          MSG DATE/TIME       PRN  TYPE         SUMMARY (JDAY/ZULU TIME START - STOP)
2005022       182014Z FEB 2005         GENERAL      /-/
2005023       232211Z FEB 2005         GENERAL      /-/
2005039       011906Z APR 2005         GENERAL      /-/
2005054       141643Z APR 2005         GENERAL      /-/
2005058       152227Z APR 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