SUBJ: GPS STATUS 23 MAY 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. LONG TERM:
NANU      MSG DATE/TIME   PRN    TYPE  SUMMARY
090-91140 031610Z MAY 91  PRN2   FCST  MAINT    140/1600-141/1000
095-91140 141948Z MAY 91  PRN2   FCST  MAINT    140/1500-141/0900
B. SHORT TERM:
NANU      MSG DATE/TIME   PRN    TYPE  SUMMARY
096-91140 201428Z MAY 91  PRN6   ADV   UNUSABLE 140/0400-140/0413
097-91142 221439Z MAY 91  PRN6   ADV   UNUSABLE 142/1208-142/1220
3. POINTS OF CONTACT:
A. CIVILIAN: US COAST GUARD AT COMMERCIAL (703)866-3806 VOICE OR
(703)866-3890 COMPUTER BBS.
B. MILITARY: 2SCS/DOS MAJ WILLIAM FAUVER AT COMMERCIAL (719)550-6379
OR DSN 560-6379.