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GPS Constellation Active Nanu Status
GPS CONSTELLATION STATUS FOR 10/01/2014

Plane Slot SVN PRN Block-Type Clock Outage Date Nanu-Type Nanu-Subject
A 1 65 24 IIF CS
A 2 52 31 IIR-M RB
A 3 38 8 IIA CS
A 4 48 7 IIR-M RB
A 6 64 30 IIF RB
B 1 56 16 IIR RB
B 2 62 25 IIF RB 02 OCT 2014 FCSTDV 2014073 - SVN62 (PRN25) FORECAST OUTAGE JDAY 275/1600 - JDAY 276/0400
B 3 44 28 IIR RB
B 4 58 12 IIR-M RB
C 1 57 29 IIR-M RB
C 2 66 27 IIF RB
C 3 59 19 IIR RB
C 4 53 17 IIR-M RB
C 5 33 3 IIA CS 01 AUG 2014 FCSTUUFN 2014060 - SVN33 (PRN03) FORECAST OUTAGE JDAY 213/1430 - UNTIL FURTHER NOTICE
D 1 61 2 IIR RB
D 2 63 1 IIF RB
D 3 45 21 IIR RB
D 4 34 4 IIA RB
D 5 46 11 IIR RB
D 6 67 6 IIF RB
E 1 51 20 IIR RB
E 2 47 22 IIR RB
E 3 50 5 IIR-M RB
E 4 54 18 IIR RB
E 5 23 32 IIA RB
E 6 40 10 IIA CS
F 1 41 14 IIR RB
F 2 55 15 IIR-M RB
F 3 43 13 IIR RB
F 4 60 23 IIR RB
F 5 26 26 IIA RB
F 6 68 9 IIF RB LAUNCH 2014062 - SVN68 (PRN09) LAUNCH JDAY 214
17 SEP 2014 USABINIT 2014071 - SVN68 (PRN09) USABLE JDAY 260/2026
GENERAL INFORMATION NANUs
2014038

2014038------------------------
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2014038 NANU TYPE: GENERAL
*** GENERAL MESSAGE TO ALL GPS USERS ***
THE PURPOSE OF THIS NOTIFICATION IS TO INFORM USERS OF AN UPCOMING EVENT RELATED TO THE GPS SATELLITE CONSTELLATION. AIR FORCE SPACE COMMAND WILL BE IMPLEMENTING CNAV MESSAGES ON THE GPS L2C AND L5 SIGNALS BEGINNING J118/1430Z WITH UPDATES FROM THE CONTROL SEGMENT APPROXIMATELY TWICE PER WEEK. THE MESSAGE POPULATED SIGNAL CONTENT WILL INCLUDE BROADCAST MESSAGE TYPES (MT) 10, 11, 12, 30, AND 33. THERE ARE NO PLANNED GPS SATELLITE OUTAGES OR DEGRADATIONS FOR THIS ACTIVITY. L2C AND L5 CNAV MESSAGES SHOULD BE TRANSPARENT TO GPS RECEIVERS THAT DO NOT PROCESS L2C OR L5 CNAV MESSAGES. THESE POPULATED SIGNALS ARE INTENDED TO FACILITATE USER FAMILIARIZATION AND DEVELOPMENT OF COMPATIBLE USER EQUIPMENT.

NOTE: UNTIL FURTHER NOTICE, THE L2C AND L5 SIGNALS ARE CONSIDERED PRE-OPERATIONAL. A PRE-OPERATIONAL SIGNAL MEANS THE AVAILABILITY AND OTHER CHARACTERISTICS OF THE BROADCAST SIGNAL MAY NOT COMPLY WITH ALL REQUIREMENTS OF THE RELEVANT INTERFACE SPECIFICATIONS AND SHOULD BE EMPLOYED AT THE USERS? OWN RISK. THEREFORE THESE SIGNALS SHOULD NOT BE USED FOR SAFETY-OF-LIFE OR OTHER CRITICAL PURPOSES. ANY MILITARY OR CIVIL USERS WHO ENCOUNTER USER EQUIPMENT PROBLEMS FOLLOWING MESSAGE POPULATION OF THE L2C AND L5 SIGNALS SHOULD CONTACT THE APPLICABLE POCS IDENTIFIED BELOW AS SOON AS POSSIBLE. AVIATION USERS SHOULD FILE REPORTS CONSISTENT WITH FAA-APPROVED PROCEDURES.
*** 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

2014039

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2014039 NANU TYPE: GENERAL
*** GENERAL MESSAGE TO ALL GPS USERS ***
REFERENCE NANU 2014038. UPDATE:


THE PURPOSE OF THIS NOTIFICATION IS TO INFORM USERS THAT THE CNAV MESSAGES ON THE GPS L2C AND L5 SIGNALS BEGINNING ON APPROXIMATELY J118/1430Z, WILL INCLUDE BROADCAST MESSAGE TYPES (MT) 10, 11, 30, AND 33, BUT WILL EXCLUDE BROADCAST MT 12.


ADDITIONALLY, THE CNAV MESSAGE HEALTH BITS WILL INDICATE THAT THE L1 AND L2 SIGNALS ARE HEALTHY, BUT THAT THE L5 SIGNAL IS UNHEALTHY. THE CNAV MESSAGE HEALTH BITS MAY FUNCTION INDEPENDENTLY FROM THE LEGACY MESSAGE HEALTH BITS AND SHOULD NOT BE CONSIDERED RELIABLE INDICATORS OF SIGNAL QUALITY OR PERFORMANCE DURING PRE-OPERATIONAL USE.


REMINDER: UNTIL FURTHER NOTICE, THE L2C AND L5 SIGNALS ARE CONSIDERED PRE-OPERATIONAL. A PRE-OPERATIONAL SIGNAL MEANS THE AVAILABILITY AND OTHER CHARACTERISTICS OF THE BROADCAST SIGNAL MAY NOT COMPLY WITH ALL REQUIREMENTS OF THE RELEVANT INTERFACE SPECIFICATIONS AND SHOULD BE EMPLOYED AT THE USERS? OWN RISK. THEREFORE THESE SIGNALS SHOULD NOT BE USED FOR SAFETY-OF-LIFE OR OTHER CRITICAL PURPOSES. ANY MILITARY OR CIVIL USERS WHO ENCOUNTER USER EQUIPMENT PROBLEMS FOLLOWING MESSAGE POPULATION OF THE L2C AND L5 SIGNALS SHOULD CONTACT THE APPLICABLE POCS IDENTIFIED BELOW AS SOON AS POSSIBLE. AVIATION USERS SHOULD FILE REPORTS CONSISTENT WITH FAA-APPROVED PROCEDURES.
*** 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

2014062

2014062------------------------
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2014062
SUBJ: SVN68 (PRN09) LAUNCH JDAY 214
1. NANU TYPE: LAUNCH
NANU NUMBER: 2014062
NANU DTG: 020344Z AUG 2014
SVN: 68
PRN: 09
LAUNCH JDAY: 214
LAUNCH TIME ZULU: 0323

2. GPS SATELLITE SVN68 (PRN09) WAS LAUNCHED ON JDAY 214.
A USABINIT NANU WILL BE SENT WHEN THE SATELLITE IS SET ACTIVE TO SERVICE.

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, GPS_SUPPORT@SCHRIEVER.AF.MIL, HTTP://GPS.AFSPC.AF.MIL/GPSOC/GPS
MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN 276-3514. COMM 805-606-3514.
JSPOCCOMBATOPS@VANDENBERG.AF.MIL

2014063

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2014063
SUBJ: SVN33 (PRN03) DECOMMISSIONING JDAY 214/2200
1. NANU TYPE: DECOM
NANU NUMBER: 2014063
NANU DTG: 022214Z AUG 2014
REFERENCE NANU: 2014060
REF NANU DTG: 251817Z JUL 2014
SVN: 33
PRN: 03
UNUSABLE START JDAY: 214
UNUSABLE START TIME ZULU: 1959
UNUSABLE START CALENDAR DATE: 02 AUG 2014
DECOMMISSIONING JDAY: 214
DECOMMISSIONING TIME ZULU: 2200
DECOMMISSIONING CALENDAR DATE: 02 AUG 2014

2. CONDITION: GPS SATELLITE SVN33 (PRN03) WAS UNUSABLE AS OF JDAY 214 (02 AUG 2014)
AND REMOVED FROM THE GPS CONSTELLATION ON JDAY 214 (02 AUG 2014).

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

2014069

2014069------------------------
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2014069 NANU TYPE: GENERAL
*** GENERAL MESSAGE TO ALL GPS USERS ***
ON APPROXIMATELY 05 SEP 2014 SVN35 WILL RESUME TRANSMITTING L-BAND UTILIZING PRN03. AT L-BAND ACTIVATION, SVN35/PRN03 WILL BE UNUSABLE UNTIL FURTHER NOTICE. ADDITIONALLY, NO BROADCAST ALMANACS WILL INCLUDE SVN35/PRN03 UNTIL FURTHER NOTICE.
*** 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



GPS Expandable Slot Designations
B D F
B5=B1F D5=D2F F5=F2F
B1-B1A D2=D2A F2=F2A