GPS OPERATIONAL ADVISORY 044.OA1 SUBJ: GPS STATUS 13 Feb 2001 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 F4, B3, C2, D4, B4, C1, C4, A3, A1, E3, D2, F3, F1, D5 CLOCK : CS, CS, CS, RB, CS, CS, RB, RB, CS, CS, RB, RB, RB, CS BLOCK II: PRNS 17, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 PLANE : SLOT D3, A5, E1, E2, B1, E4, D1, A2, F2, A4, B5, F5, B2, C3 CLOCK : CS, CS, RB, CS, RB, CS, CS, CS, RB, CS, RB, RB, CS, CS 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) 2001011 122007Z JAN 2001 21 FCSTMX 019/1400-020/0200 2001012 162026Z JAN 2001 28 FCSTMX 023/1200-024/0000 2001013 191815Z JAN 2001 21 FCSTSUMM 019/1422-019/1821 2001014 231710Z JAN 2001 28 FCSTSUMM 023/1229-023/1656 2001016 302137Z JAN 2001 19 FCSTMX 040/1215-041/0015 2001017 302141Z JAN 2001 28 FCSTMX 042/1100-042/2300 2001019 311526Z JAN 2001 03 FCSTSUMM 031/0434-031/1509 2001022 082036Z FEB 2001 10 FCSTMX 047/2200-048/1000 2001023 091720Z FEB 2001 19 FCSTSUMM 040/1318-040/1701 2001024 111636Z FEB 2001 28 FCSTSUMM 042/1133-042/1616 2001025 131823Z FEB 2001 10 FCSTCANC 047/2200-/ B. ADVISORIES: NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU TIME START - STOP) 2001015 300237Z JAN 2001 15 UNUSUFN 030/0211-/ 2001018 310554Z JAN 2001 03 UNUSUFN 031/0434-/ 2001021 311744Z JAN 2001 03 UNUSABLE 031/0434-031/1509 C. GENERAL: NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU TIME START - STOP) 3. REMARKS: A. SELECTIVE AVAILABILITY WAS TURNED OFF ON JDAY 123 (02 MAY 00) AT 0407Z B. THE POINT OF CONTACT FOR GPS MILITARY OPERATIONAL SUPPORT IS THE GPS SUPPORT CENTER AT (719)567-2541 OR DSN 560-2541. C. CIVILIAN: FOR INFORMATION, CONTACT US COAST GUARD NAVCEN AT COMMERCIAL (703)313-5900 24 HOURS DAILY AND INTERNET HTTP://WWW.NAVCEN.USCG.MIL OR FTP://FTP.NAVCEN.USCG.MIL. D. MILITARY: FOR INFORMATION, CONTACT 1LT HERB KNIERIM, 2SOPS/DOAN NAVIGATION ANALYST AT (719)567-6614, DSN 560-6614, OR INTERNET HTTP://WWW.SCHRIEVER.AF.MIL/GPS.