SUBJ: GPS STATUS 05 MAY 93
1. SATELLITES, PLANES AND CLOCKS (CS=CESIUM RB=RUBIDIUM):
A. BLOCK I : PRNS  3, 11, 12, 13
   PLANE   : SLOT C4, C3, A1, C1
   CLOCK   :      RB, RB, RB, CS
B. BLOCK II: PRNS  1,  2, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27
   PLANE   : SLOT F1, B3, E1, D2, E3, D3, F3, A4, B2, E2, E4, D1, A2, F2, A3
   CLOCK   :      CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, RB, CS, CS
   BLOCK II: PRNS 28, 29, 22, 31
   PLANE   : SLOT C2, F4, B1, C3
   CLOCK   :      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
104-93123 202131Z APR 93  PRN17    FCST   MAINT       123/0050 UP TO 12 HRS
110-93130 261535Z APR 93  PRN12    FCST   MAINT       130/1600 UP TO 5 HRS
111-93131 261540Z APR 93  PRN3     FCST   MAINT       131/1600 UP TO 5 HRS
120-93140 031614Z MAY 93  PRN20    FCST   MAINT       139/1350 UP TO 12 HRS
121-93140 031634Z MAY 93  PRN29    FCST   MAINT       140/1100 UP TO 8 HRS
B. ADVISORIES:
NANU      MSG DATE/TIME   PRN      TYPE  SUMMARY
113-93124 271600Z APR 93  PRN11    ADV   UNUSABLE     124/0000-UFN
114-93118 281655Z APR 93  PRN31    ADV   SEE NANU     103/2053-UFN
115-93119 291355Z APR 93  PRN11    ADV   UNUSABLE     119/1246-119/1247
116-93120 301345Z APR 93  PRN12    ADV   UNUSABLE     119/2212-119/2238
117-93120 301330Z APR 93  PRN13    ADV   UNUSABLE     120/0354-120/0405
118-93120 301747Z APR 93  PRN12    ADV   UNUSABLE     120/1615-120/1713
119-93123 031405Z MAY 93  SEE NANU ADV   AS TESTING   118/1200-123/0000
122-93124 041332Z MAY 93  PRN12    ADV   UNUSABLE     124/1300-124/1309
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. 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 Col ROB WORLEY (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)550-6378/80 OR DSN 560-
6378/80