SUBJ: GPS STATUS 01 JUL 91
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, CS, CS
B. BLOCK II: PRNS  2, 14, 15, 16, 17, 18, 19, 20, 21, 23
   PLANE   : SLOT B3, E1, D2, E3, D3, F3, A4, B2, E2, E4
   CLOCK   :      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
115-91176 191540Z JUN 91  PRN14  FCST  UNUSABLE 176/0600  +12 HRS
117-91177 202122Z JUN 91  PRN14  FCST  UNUSABLE 177/0600  +12 HRS
119-91177 262023Z JUN 91  BLKII  FCST  SPS REACTIVATION FORECAST
121-91182 011354Z JUL 91  BLKII  FCST  SA ON    182/0400  -UFN
B. ADVISORIES:
NANU      MSG DATE/TIME   PRN    TYPE  SUMMARY
120-91180 011345Z JUL 91  PRN11  ADV   UNUSABLE 180/2058-180/2110
3. REMARKS:
A. REF NANU 118 - PRN6 WAS SET UNUSABLE ON DAY 175 (24 JUN 91) AT
APPROXIMATELY 1220 UTC. THE OUTAGE WAS NOT SCHEDULED AND ALL EFFORTS
ARE BEING MADE TO RESTORE PRN6 TO SERVICE. AN ESTIMATED TIME OR DATE
WHEN PRN6 WILL BE USABLE IS NOT AVAILABLE AT THIS TIME.
B. REF NANU 121 - SELECTIVE AVAILABILITY WAS REACTIVATED AT STANDARD
POSITIONING SERVICE ACCURACY LEVELS ON DAY 182 (01 JUL 91) AT 0400 UTC.
THE POINT OF CONTACT IS MAJOR JOE WYSOCKI (719)554-5770 OR DSN 692-5770.
4. POINTS OF CONTACT:
A. CIVILIAN: US COAST GUARD AT COMMERCIAL (703)866-3806 VOICE OR
(703)866-3890 COMPUTER BBS.
B. MILITARY: 2SCS/DOCI MAJ WILLIAM FAUVER AT (719)550-6379 OR DSN
560-6379.