2016016------------------------
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2016016 NANU TYPE: GENERAL
*** GENERAL MESSAGE TO ALL GPS USERS ***
NAVCEN has determined that the event referenced by GPS NANU 2016012 was not a GPS time transfer anomaly but was a user equipment issue. GPS users that continue to experience equipment problems are encouraged to contact their equipment manufacturer for

assistance.

*** GENERAL MESSAGE TO ALL GPS USERS ***

POC: CIVILIAN - NAVCEN AT 703-313-5900, HTTP://WWW.NAVCEN.USCG.GOV
MILITARY - GPS OPERATIONS CENTER at HTTPS://GPS.AFSPC.AF.MIL/GPSOC, DSN 560-2541,
COMM 719-567-2541, gpsoperationscenter@us.af.mil, HTTPS://GPS.AFSPC.AF.MIL
MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN 276-3514,
COMM 805-606-3514, JSPOCCOMBATOPS@VANDENBERG.AF.MIL

2016017------------------------
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2016017
SUBJ: SVN43 (PRN13) UNUSABLE JDAY 059/1439 - UNTIL FURTHER NOTICE
1. NANU TYPE: UNUSUFN
NANU NUMBER: 2016017
NANU DTG: 281502Z FEB 2016
REFERENCE NANU: N/A
REF NANU DTG: N/A
SVN: 43
PRN: 13
START JDAY: 059
START TIME ZULU: 1439
START CALENDAR DATE: 28 FEB 2016
STOP JDAY: UFN
STOP TIME ZULU: N/A
STOP CALENDAR DATE: N/A

2. CONDITION: GPS SATELLITE SVN43 (PRN13) WAS UNUSABLE ON JDAY 059
(28 FEB 2016) BEGINNING 1439 ZULU UNTIL FURTHER NOTICE.

3. POC: CIVILIAN - NAVCEN AT 703-313-5900, HTTP://WWW.NAVCEN.USCG.GOV
MILITARY - GPS OPERATIONS CENTER at HTTPS://GPS.AFSPC.AF.MIL/GPSOC, DSN 560-2541,
COMM 719-567-2541, gpsoperationscenter@us.af.mil, HTTPS://GPS.AFSPC.AF.MIL
MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN 276-3514,
COMM 805-606-3514, JSPOCCOMBATOPS@VANDENBERG.AF.MIL

UNCLASSIFIED
GPS OPERATIONAL ADVISORY 059.OA1
SUBJ: GPS STATUS 28 FEB 2016

1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM):
A. BLOCK I : NONE
B. BLOCK II: PRNS 1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
PLANE : SLOT D2, D1, E1, E3, D4, A4, C3, F3, E6, D5, B4, F6, F1, F2
CLOCK : RB, RB, RB, RB, RB, RB, CS, RB, RB, 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, C5, B6, D3, E2, F4, A1, B2, B5, C2, B3, C1
CLOCK : RB, RB, RB, RB, RB, RB, RB, RB, CS, RB, RB, RB, RB, RB
BLOCK II: PRNS 30, 31, 32
PLANE : SLOT A3, A2, F5
CLOCK : 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)

2016013 191643Z FEB 2016 19 FCSTDV 057/0035-057/1235
2016014 260719Z FEB 2016 19 FCSTSUMM 057/0038-057/0718
2016015 261945Z FEB 2016 15 FCSTDV 064/0015-064/1215
B. ADVISORIES:
NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU TIME START - STOP)

2016017 281502Z FEB 2016 13 UNUSUFN 059/1439-/
C. GENERAL:
NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU TIME START - STOP)

2014038 241350Z APR 2014 GENERAL /-/
2014039 271351Z APR 2014 GENERAL /-/
2016011 051404Z FEB 2016 32 LAUNCH /-/
2016012 141045Z FEB 2016 GENERAL /-/
2016016 262049Z FEB 2016 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

http://www.navcen.uscg.gov/?pageName=nanuAbbreviations http://celestrak.com/GPS/NANU/
http://celestrak.com/GPS/status/

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