SUBJ: GPS STATUS 26 FEB 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
021-92050 121527Z FEB 92  PRN14  FCST  SCHEDULE 050/1630- 8HRS
027-92059 242336Z FEB 92  PRN6   FCST  SCHEDULE 059/1900- 8HRS
B. ADVISORIES:
NANU      MSG DATE/TIME   PRN    TYPE  SUMMARY
025-92051 201420Z FEB 92  PRN12  ADV   UNUSABLE 051/0800-051/0814
026-92052 241644Z FEB 92  PRN11  ADV   UNUSABLE 052/0500-052/0514
                          PRN13  ADV   UNUSABLE 054/0451-054/0505
028-92057 311945Z FEB 92  PRN3   ADV   UNUSABLE 057/0020-057/0021
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