SUBJ: GPS STATUS 23 FEB 95 1. SATELLITES, PLANES AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I : PRNS 12 PLANE : SLOT A1 CLOCK : RB B. BLOCK II: PRNS 1, 2, 4, 5, 6, 7, 9, 14, 15, 16, 17, 18, 19, 20, 21 PLANE : SLOT F1, B3, D4, B4, C1, C4, A1, E1, D2, E3, D3, F3, A4, B2, E2 CLOCK : CS, CS, CS, CS, RB, CS, CS, CS, CS, CS, CS, CS, RB, RB, CS BLOCK II: PRNS 22, 23, 24, 25, 26, 27, 28, 29, 31 PLANE : SLOT B1, E4, D1, A2, F2, A3, C2, F4, C3 CLOCK : CS, CS, RB, CS, CS, CS, CS, CS, CS 2. CURRENT ADVISORIES (ADV) AND FORECASTS (FCST): INFORMATION IS REPEATED FOR SEVEN DAYS AFTER EVENT CONCLUDES. A. FORECASTS: NANU MSG DATE/TIME PRN TYPE SUMMARY 018-95047 271517Z JAN 95 PRN06 FCST MAINT 047/0330-UP TO 12 HOURS 021-95051 081855Z FEB 95 PRN28 FCST MAINT CANCELLED 023-95059 141515Z FEB 95 PRN22 FCST MAINT 059/2120-UP TO 18 HOURS B. ADVISORIES NANU MSG DATE/TIME PRN TYPE SUMMARY 027-95047 160942Z FEB 95 PRN06 ADV UNUSABLE 047/0348-047/0923 031-95049 181751Z FEB 95 PRN25 ADV UNUSABLE 049/1505-049/1508 032-95050 190256Z FEB 95 PRN12 ADV UNUSABLE 050/0224-050/0238 033-95051 201046Z FEB 95 PRN28 ADV UNUSABLE 051/0915-UFN 034-95051 201235Z FEB 95 PRN28 ADV UNUSABLE 051/0915-051/1144 C. GENERAL: NO IMPACT, INFORMATIONAL PURPOSES ONLY NUMBER MSG DATE/TIME PRN TYPE SUMMARY 00B-95048 171748Z FEB 95 PRN28 FCST CANCEL 051/0420-UP TO 18 HOURS 3. REMARKS: A. SELECTIVE AVAILABILITY WAS REACTIVATED AT STANDARD POSITIONING SERVICE ACCURACY LEVELS ON DAY 182 (01 JUL 91) AT 0400 UTC. VARIATIONS MAY BE SEEN IN THE EFFECT OF SA DURING TESTING, BUT THE EFFECT SHOULD NOT EXCEED STANDARD POSITIONING SERVICE LEVELS. THE POINT OF CONTACT IS LTCDR TRICE (719)554-2634 OR DSN 692-2634. A. CIVILIAN: US COAST GUARD AT COMMERCIAL (703)313-5900 VOICE OR (703)313-5910 COMPUTER BBS. B. MILITARY: 2SOPS/DOAN SrA GRUND AT (719)550-6378 OR DSN 560- 6378