GPS OPERATIONAL ADVISORY 053
SUBJ: GPS STATUS 22 FEB 2015

1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM):
A. BLOCK I : NONE
B. BLOCK II: PRNS 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
PLANE : SLOT D2, D1, B6, D6, E3, D4, A4, A6, F3, E6, D5, B4, F6, F1
CLOCK : RB, RB, RB, RB, RB, RB, RB, CS, RB, CS, RB, RB, RB, RB
BLOCK II: PRNS 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28
PLANE : SLOT F2, B1, C4, E4, C3, E1, D3, E2, F4, A1, B2, F5, C2, B3
CLOCK : RB, RB, RB, RB, RB, RB, RB, RB, RB, CS, RB, CS, RB, RB
BLOCK II: PRNS 29, 30, 31, 32
PLANE : SLOT C1, A3, A2, E5
CLOCK : RB, RB, 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)

2015008 302008Z JAN 2015 30 FCSTDV 037/0030-037/1230
2015009 060558Z FEB 2015 30 FCSTSUMM 037/0112-037/0556
B. ADVISORIES:
NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU TIME START - STOP)

2015011 190631Z FEB 2015 11 UNUSUFN 050/0450-/
2015012 201444Z FEB 2015 11 UNUSABLE 050/0450-051/1445
C. GENERAL:
NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU TIME START - STOP)

2014038 241350Z APR 2014 GENERAL /-/
2014039 271351Z APR 2014 GENERAL /-/
2015003 021712Z JAN 2015 GENERAL /-/
2015007 302003Z JAN 2015 GENERAL /-/
2015010 182230Z FEB 2015 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
HTTPS://GPS.AFSPC.AF.MIL/GPS OR HTTPS://GPS.AFSPC.AF.MIL/GPSOC