SUBJ: GPS STATUS 26 JUN 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
B. ADVISORIES:
NANU      MSG DATE/TIME   PRN    TYPE  SUMMARY
114-91170 191447Z JUN 91  PRN6   ADV   UNUSABLE 170/1335-170/1401
116-91170 192241Z JUN 91  PRN11  ADV   UNUSABLE 170/2204-170/2216
118-91175 241415Z JUN 91  PRN6   ADV   UNUSABLE 175/1220      UFN
3. REMARKS: REF NANU 118 - PRN6 WAS SET UNUSABLE ON DAY 175 (24 JUN
91) AT APPROXIMATELY 1220 UTC. DATA GATHERED FROM PRN6 FOR TWO TO
THREE HOURS PRIOR TO THE OUTAGE SHOULD BE USED WITH CAUTION. THIS
OUTAGE WILL CONTINUE UNTIL FURTHER NOTICE. ADDITIONAL INFORMATION
WILL BE PROVIDED AS DETAILS BECOME AVAILABLE.
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.