SUBJ: GPS STATUS 05 APR 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
   PLANE   : SLOT C2, F4
   CLOCK   :      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
069-93096 241557Z MAR 93  PRN28    FCST   MAINT       095/1630 UP TO 12 HRS
080-93103 301720Z MAR 93  PRN20    FCST   MAINT       103/0200 UP TO 8 HRS
B. ADVISORIES:
NANU      MSG DATE/TIME   PRN      TYPE  SUMMARY
077-93089 301414Z MAR 93  PRN13    ADV   UNUSABLE     089/0328-089/0341
078-93089 301528Z MAR 93  PRN7     ADV   LAUNCH       089/0309
079-93089 301642Z MAR 93  PRN31    ADV   CORRECTION OF NANU 078-93089
081-93090 311427Z MAR 93  PRN13    ADV   UNUSABLE     090/0100-090/0124
082-93090 312126Z MAR 93  PRN19    ADV   AS TESTING   090/1900-1930&2000-2030
083-93092 021424Z APR 93  PRN13    ADV   UNUSABLE     092/0431-092/0440
084-93094 040600Z APR 93  PRN22    ADV   USABLE       094/0520
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 HUTSELL AT (719)550-6378/80 OR DSN 560-
6378/80