SUBJ: GPS STATUS 02 MAR 92 1. SATELLITES, PLANES AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I : PRNS 3, 6, 11, 12, 13 PLANE : SLOT C4, A3, C3, A1, C1 CLOCK : RB, RB, CS, RB, CS B. BLOCK II: PRNS 2, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24 PLANE : SLOT B3, E1, D2, E3, D3, F3, A4, B2, E2, E4, D1 CLOCK : CS, CS, CS, CS, CS, 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 121-91182 011354Z JUL 91 BLKII FCST SA ON 182/0400- UFN 027-92059 242336Z FEB 92 PRN6 FCST SCHEDULE 059/1900- 8HRS 028-92081 261647Z FEB 92 PRN25 FCST USABLE NET 081 B. ADVISORIES: NANU MSG DATE/TIME PRN TYPE SUMMARY 029-92057 311945Z FEB 92 PRN3 ADV UNUSABLE 057/0020-057/0021 030-92058 271838Z FEB 92 PRN12 ADV UNUSABLE 058/1711-058/1737 031-92059 281431Z FEB 92 PRN3 ADV UNUSABLE 059/0200-059/0214 032-92059 282224Z FEB 92 PRN12 ADV UNUSABLE 059/2153-059/2218 033-09060 021416Z MAR 92 PRN3 ADV UNUSABLE 060/0900-060/0914 PRN12 ADV UNUSABLE 060/1501-060/1502 3. REMARKS: A. USERS OF GPS ARE CAUTIONED THAT THE SYSTEM IS NOT YET FULLY OPERATIONAL. SIGNAL AVAILABILITY AND ACCURACY ARE SUBJECT TO CHANGE DUE TO AN INCOMPLETE CONSTELLATION AND OPERATIONAL TEST ACTIVITIES. B. REF NANU 121 - 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 MAJ ROB WORLEY (719)554-2634 OR DSN 692-2634. 4. POINTS OF CONTACT: A. CIVILIAN: US COAST GUARD AT COMMERCIAL (703)866-3806 VOICE OR (703)866-3890 COMPUTER BBS. B. MILITARY: 2SOPS/DOAI 1LT INGEGNERI AT (719)550-6379 OR DSN 560-6379