SUBJ: GPS STATUS 18 FEB 94
1. SATELLITES, PLANES AND CLOCKS (CS=CESIUM RB=RUBIDIUM):
A. BLOCK I : PRNS  3, 12, 13
   PLANE   : SLOT C4, A1, C1
   CLOCK   :      RB, RB, RB
B. BLOCK II: PRNS  1,  2,  4,  5,  7,  9, 14, 15, 16, 17, 18, 19, 20, 21, 22
   PLANE   : SLOT F1, B3, D4, B4, C4, A1, E1, D2, E3, D3, F3, A4, B2, E2, B1
   CLOCK   :      CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS
   BLOCK II: PRNS 23, 24, 25, 26, 27, 28, 29, 31
   PLANE   : SLOT E4, D1, A2, F2, A3, C2, F4, C3
   CLOCK   :      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
035-94049 012016Z FEB 94  PRN12    FCST   MAINT       049/1500-UP TO 96 HOURS
057-94059 141918Z FEB 94  PRN13    FCST   MAINT       059/0000-UFN
066-94062 171859Z FEB 94  PRN27    FCST   MAINT       062/1915-UP TO 12 HOURS
B. ADVISORIES
NANU      MSG DATE/TIME   PRN      TYPE  SUMMARY
047-94041 101446Z FEB 94  PRN12    ADV   UNUSABLE     041/0148-041/0213
048-94041 101937Z FEB 94  PRN3     ADV   UNUSABLE     041/1800-041/1824
049-94042 112043Z FEB 94  PRN3     ADV   UNUSABLE     042/1816-042/1955
050-94042 112045Z FEB 94  BII/IIA  ADV   ANTI-SPOOF   031/0000Z
051-94043 121530Z FEB 94  PRN03    ADV   UNUSABLE     043/1431-UFN
052-94043 121912Z FEB 94  PRN03    ADV   UNUSABLE     043/1431-043/1855
053-94043 130319Z FEB 94  PRN03    ADV   UNUSABLE     044/0216-UFN
054-94043 130420Z FEB 94  PRN03    ADV   UNUSABLE     044/0216-044/0420
055-94045 141536Z FEB 94  PRN3     ADV   UNUSABLE     043/1234-043/1855
056-94045 141540Z FEB 94  PRN3     ADV   UNUSABLE     044/0216-044/0420
058-94046 151456Z FEB 94  PRN12    ADV   UNUSABLE     045/2207-045/2235
059-94046 151459Z FEB 94  PRN3     ADV   UNUSABLE     046/1100-046/1119
060-94047 161623Z FEB 94  PRN3     ADV   UNUSABLE     047/1247-047/1615
061-94047 162345Z FEB 94  PRN03    ADV   UNUSABLE     047/2300-UFN
062-94048 170137Z FEB 94  PRN3     ADV   USABLE       048/0115
063-94048 171510Z FEB 94  PRN3     ADV   UNUSABLE     048/1230-UFN
064-94048 171834Z FEB 94  PRN03    ADV   UNUSABLE     047/2247-048/0115
065-94048 171857Z FEB 94  PRN03    ADV   UNUSABLE     048/1230-048/1745
067-94049 180541Z FEB 94  PRN03    ADV   UNUSABLE     049/0515-UFN
068-94049 180708Z FEB 94  PRN03    ADV   UNUSABLE     049/0515-049/0645
069-94049 181532Z FEB 94  PRN03    ADV   UNUSABLE     049/0508-049/0645
3. REMARKS:
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 LT CMDR TRICE (719)554-2634 OR DSN 692-2634.
4. POINTS OF CONTACT:
A. CIVILIAN: US COAST GUARD AT COMMERCIAL (703)313-5900 VOICE OR
(703)313-5910 COMPUTER BBS.
B. MILITARY: 2SOPS/DOAI CAPTAIN THOMPSON AT (719)550-6378 OR DSN 560-
6378