SUBJ: GPS STATUS 28 Feb 97
1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM):
A. BLOCK I : NONE
B. BLOCK II: PRNS  1,  2,  3,  4,  5,  6,  7,  9, 10, 14, 15, 16, 17, 18, 19
   PLANE   : SLOT F1, B3, C2, D4, B4, C1, C4, A1, E3, E1, D2, E5, D3, F3, A4
   CLOCK   :      RB, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, CS, RB
   BLOCK II: PRNS 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
   PLANE   : SLOT E2, B1, E4, D1, A2, F2, A3, C5, F4, B2, C3
   CLOCK   :      CS, CS, CS, RB, CS, CS, CS, CS, CS, CS, RB
2. CURRENT ADVISORIES AND FORECASTS :
INFORMATION IS REPEATED FOR SEVEN DAYS AFTER EVENT CONCLUDES.
NANU          MSG DATE/TIME     PRN    TYPE         SUMMARY (JDAY/ZULU TIME START - STOP)
A. FORECASTS:
NANU          MSG DATE/TIME     PRN    TYPE         SUMMARY (JDAY/ZULU TIME START - STOP)
012-97055     102209Z Feb  97   24     FCST MX      055/2330-   UP TO 12 HOURS
016-97069     141948Z Feb  97   24     FCST         069/2220-   UP TO 12 HOURS
                                       RESCHEDULED
019-97064     211452Z Feb  97   10     FCST MX      064/1230    UP TO 16 HOURS
020-97065     211920Z Feb  97   10     FCST         065/1230-   UP TO 16 HOURS
                                       RESCHEDULED
B. ADVISORIES:
NANU          MSG DATE/TIME     PRN    TYPE         SUMMARY (JDAY/ZULU TIME START - STOP)
021-97066     271010Z FEB  97   18     UNUSABLE     058/0748Z-  058/0840Z
179-96309     041717Z NOV  96   28     UNUSABLE     309/1634-   UNTIL FURTHUR NOTICE
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 LEVELS. THE POINT OF
CONTACT IS LTCOL DAVIS (719)554-2634 OR DSN 692-2634.
B. CIVILIAN:  FOR INFORMATION, CONTACT US COAST GUARD NAVCEN AT
COMMERCIAL (703)313-5900 24 HOURS DAILY, COMPUTER BBS (703)313-5910,
AND INTERNET HTTP://WWW.NAVCEN.USCG.MIL OR FTP://FTP.NAVCEN.USCG.MIL.
C. MILITARY: FOR INFORMATION, CONTACT 2LT BRIAN BARKER, 2SOPS/DOUAN
NAVIGATION ANALYST AT (719)567-6378, DSN 560-6378, OR COMPUTER BBS
(719)567-6379.