GPS OPERATIONAL ADVISORY 274
SUBJ: GPS STATUS 30 SEP 2008

1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM):
A. BLOCK I : NONE
B. BLOCK II: PRNS 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
PLANE : SLOT D1, C2, D4, B5, C5, A6, A3, A1, E3, D2, B4, F3, F1, F2
CLOCK : RB, CS, RB, RB, RB, RB, CS, CS, CS, RB, RB, RB, RB, RB
BLOCK II: PRNS 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29
PLANE : SLOT B1, C4, E4, C3, E1, D3, E2, F4, D5, A5, F5, A4, B3, C1
CLOCK : RB, RB, RB, RB, RB, RB, RB, RB, CS, RB, RB, CS, RB, RB
BLOCK II: PRNS 30, 31, 32
PLANE : SLOT B2, A2, E5
CLOCK : CS, RB, RB
2. CURRENT ADVISORIES AND FORECASTS :
A. FORECASTS: FOR SEVEN DAYS AFTER EVENT CONCLUDES.
NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU
TIME START - STOP)

2008102 111854Z SEP 2008 28 FCSTMX 262/1500-263/0300
2008103 112004Z SEP 2008 12 FCSTDV 260/2330-261/1400
2008107 170556Z SEP 2008 12 FCSTSUMM 260/2346-261/0554
2008108 181856Z SEP 2008 28 FCSTSUMM 262/1537-262/1855
2008109 182023Z SEP 2008 29 FCSTMX 267/2030-268/0830
2008110 182026Z SEP 2008 15 FCSTMX 269/2000-270/0800
2008112 192005Z SEP 2008 29 FCSTCANC 263/2006-/
2008113 192008Z SEP 2008 15 FCSTCANC 263/2009-/
2008114 252044Z SEP 2008 02 FCSTMX 274/1630-275/0430
2008115 252047Z SEP 2008 12 FCSTMX 276/1730-277/0530
B. ADVISORIES:
NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU
TIME START - STOP)

2008105 160020Z SEP 2008 25 UNUSABLE 239/2219-260/0014
C. GENERAL:
NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU
TIME START - STOP)

2008111 191929Z SEP 2008 GENERAL /-/
3. REMARKS:
A. THE POINT OF CONTACT FOR GPS MILITARY OPERATIONAL SUPPORT IS THE GPS
OPERATIONS CENTER AT (719)567-2541 OR DSN 560-2541.
B. CIVILIAN: FOR INFORMATION, CONTACT US COAST GUARD NAVCEN AT
COMMERCIAL (703)313-5900 24 HOURS DAILY AND INTERNET
HTTP://WWW.NAVCEN.USCG.GOV
C. MILITARY SUPPORT WEBPAGES CAN BE FOUND AT THE FOLLOWING
HTTP://GPS.AFSPC.AF.MIL/GPS OR HTTP://GPS.AFSPC.AF.MIL/GPSOC