NANU Types and Templates

Forecast Outages

• FCSTDV, or Forecast Delta-V - gives scheduled outage times for Delta-V maneuvers. The satellite is moved during this maintenance and the user may be required to download a new almanac.
• FCSTMX, or Forecast Maintenance - gives scheduled outage times for Ion Pump Operations or software tests.
• FCSTEXTD, or Forecast Extension - extends the scheduled outage time "Until Further Notice"; references the original NANU.
• FCSTSUMM, or Forecast Summary - gives the exact outage times for the scheduled outage, including the FCSTEXTD; sent after the maintenance is complete and the satellite is set healthy to users; references the original NANU.
• FCSTCANC, or Forecast Cancellation -.cancels a scheduled outage; new maintenance time not yet determined; references the original NANU.
• FCSTRESCD, or Forecast Rescheduled - reschedules a scheduled outage; references the original NANU

Unscheduled Outages

• UNUSUFN, or Unusable Until Further Notice - notifies users that a satellite will be Unusable to all users until further notice.
• UNUSABLE, or UNUSABLE with a reference NANU - closes out an UNUSUFN NANU and gives the exact outage times for the outage; references the UNUSUFN NANU.
• UNUNOREF, or UNUSABLE with no reference NANU - gives times for outages that were resolved before a UNUSUFN NANU could be sent.

Other

• USABINIT, or Initially Usable, notifies users that a satellite is set healthy for the first time.
• LEAPSEC, or Leap Second, is used to notify users of an impending Leap Second.

• GENERAL, informs the user of general GPS information.

 

FCSTDV TEMPLATE

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 1997113
SUBJ: SVN43 (PRNl3) FORECAST OUTAGE JDAY 298/0200 - JDAY 298/1400
1. NANU TYPE: FCSTDV
    NANU NUMBER: 1997113
    NANJ DTG: 170227Z OCT 1997
    REFERENCE NANU: N/A
    REF NANU DTG: N/A
    SVN: 43
    PRN: 13
    START JDAY: 298
    START TIME ZULU: 0200
    START CALENDAR DATE: 25 OCT 1997
    STOP JDAY: 298
    STOP TIME ZULU: 1400
    STOP CALENDAR DATE: 25 OCT 1997
2. CONDITION: GPS SATELLITE SVN43 (PRNl3) WILL BE UNUSABLE ON JDAY 298 (25 OCT 1997) BEGINNING 0200 ZULU UNTlL JDAY 298 (25 OCT 1997) ENDING 1400 ZULU.
3. POC: CIVILIAN - NAVCEN AT (703) 313-5900. HTTP://www.navcen.uscg.gov MTLYTARY - LT BRIAN BARKER, 2 SOPS NAVIGATION ANALYST, DSN 560-6378, COMM 719-567-6378. GPS@FAFB.AF.MIL, HTTP://VWW.FAFB.AF.MlL/GPS

FCSTMX TEMPLATE

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 1997113
SUBJ: SVN43 (PRN13) FORECAST OUTAGE JDAY 298/0200 - JDAY 298/1400
1. NANU TYPE: FCSTMX
    NANU NUMBER 1997113
    NANU DTG: 170227Z OCT 1997
    REFERENCE NANU: N/A
    REF NANU DTG: N/A
    SVN: 43
    PRN: 13
    START JDAY: 298
    START TIME ZULU: 0200
    START CALENDAR DATE: 25 OCT 1997
    STOP JDAY: 298
    STOP TIME ZULU: 1400
    STOP CALENDAR DATE: 25 OCT 1997
2. CONDITION: GPS SATELLITE SVN43 (PRNl3) WILL BE UNUSABLE ON JDAY 298 (25 OCT 1997) BEGININING 0200 ZULU UNTIL JDAY 298 (25 OCT 1997) ENDING 1400 ZULU.
3. POC: CIVILIAN - NAVCEN AT (703) 313-5900. HTTP://WWW.NAVCEN.USCG.MlL MILITARY - LT BRIAN BARKER 2 SOPS NAVIGATION ANALYST, DSN 560-6378. COMM 719. 567-6378. GPS@FAFB.AF.MIL. HTTP://WWW.FAFB.AF.MlL/Gl'S

FCSTSUMM TEMPLATE

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 1997114
SUBJ: SVN43 (PRNl3) FORECAST OUTAGE JDAY 298/0200 - JDAY 298/0836
1. NANU TYPE: FCSTSUMM
    NANU NUMBER: 1997114
    NANU DTG: 250853Z OCT 1997
    REFERENCE NANU: 1997113
    REF NANU DTG: 170236Z OCT 1997
    SVN: 43 PRN:13
    START JDAY: 298
    START TIME ZULU: 0200
    START CALENDAR DATE: 25 OCT I997
    STOP JDAY: 298
    STOP TlME ZULU: 0836
    STOP CALENDAR DATE: 25 OCT 1997
2. CONDITION: GPS SATELLITE SVN43 (PRNl3) WAS UNUSABLE ON JDAY 298 (25 OCT 1997) BEGINNING 0200 ZULU UNTIL JDAY 298 (25 OCT 1997) ENDING 0836 ZULU.
3. POC: CIVILIAN - NAVCEN AT (703) 313-5900, HTTP://www.navcen.uscg.gov MILITARY - LT BRIAN BARKER 2 SOPS NAVIGATION ANALYST, DSN 560.6378, COMM 719-567-6378, GPS@FAFB.AF.MIL, HTTP://WWW.FAFB.AF.MIL/GPS

FCSTCANC TEMPLATE

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 1997113
SUBJ: SVN43 (PRNl3) FORECAST OUTAGE CANCELLED
1. NANU TYPE: FCSTCANC
    NANU NUMBER: 1997113
    NANU DTG: 170227Z OCT 1997
    REFERENCE NANU: 1997112
    REF NANU DTG: 080246Z OCT 1997
    SVN: 43
    PRN: 13
    START JDAY: 298
    START TIME ZULU: 0200
    START CALENDAR DATE: 25 OCT 1997
    STOP JDAY: CANCELLED
    STOP TIME ZULU: N/A
    STOP CALENDAR DATE: N/A
2. CONDITION: THE FORECAST MAINTENANCE ON GPS SATELLITE SVN43 (PRNl3) SCHEDULED FOR JDAY 298 (25 OCT 1997) BEGINNING 0200 ZULU WAS CANCELLED.
3. POC: CIVILIAN - NAVCEN AT (703) 313-5900, HTTP://www.navcen.uscg.gov MILITARY - LT BRIAN BARKER, 2 SOPS NAVIGATION ANALYST, DSN 560-6378. COMM 719-567-6378, GPS@FAFB.AF.MIL, HTTP://WWW.FAFB.AF.MIL/GPS

FCSTRESCD TEMPLATE

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 1997113
SUBJ:SVN43 (PRNl3) FORECAST OUTAGE JDAY 298/0200 - JDAY 298/1400
1. NANU TYPE: FCSTRESCD
    NANU NUMBER: 1997113
    NANU DTG: 170227Z OCT 1997
    REFERENCE NANU 1997112
    REF NANU DTG: 080345Z OCT 1997
    SVN: 43
    PRN: 13
    START JDAY: 298.
    START TIME ZULU: 0200
    START CALENDAR DATE: 25 OCT 1997
    STOP JDAY: 298
    STOP TIME ZULU: 1400
    STOP CALENDAR DATE: 25 OCT 1997
2. CONDITION: GPS SATELLITE SVN43 (PRNl3) WILL BE UNUSABLE ON JDAY 298 (25 OCT 1997) BEGINNING 0200 ZULU UNTIL JDAY 298 (25 OCT 1997) ENDING 1400 ZULU. PLEASE REFERENCE NANU NUMBER 19971I2 DTG 080345Z OCT 1997 OR THE ORIGMAL OUTAGE TIME.
3. POC: CIVILIAN - NAVCEN AT (703) 313-5900. HTTP://www.navcen.uscg.gov MILITARY - LT BRIAN BARKER, 2 SOPS NAVIGATION ANALYST, DSN 560-6378. COMM 719-567-6378. GPS@FAFB.AF.MIL, HTTP://WWW.FAFB.AF.MIL/GPS

FCSTEXTD TEMPLATE

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 1997113
SUBJ: SVN43 (PRNI3) FORECAST OUTAGE EXTENDED UNTIL FURTHUR NOTICE
NANU TYPE: FCSTEXTD
1. NANUNUMBER: 1997113
    NANU DTG: 170227Z OCT 1997
    REFERENCE NANU: 1997112
    REF NANU DTG: 080345Z OCT 1997
    SVN: 43 PRN: 13
    START JDAY: 298
    START TIME ZULU: 0200
    START CALENDAR DATE: 25 OCT 1997
    STOP JDAY: UFN
    STOP TIME ZULU: N/A
    STOP CALENDAR DATE: N/A
2. CONDITION: THE FORECAST OUTAGE FOR GPS SATELLITE SVN43 (PRNl3) IS EXTENDED UNTIL FURTHUR NOTICE.
3. POC: CIVILIAN - NAVCEN AT (703) 313-5900, HTTP://www.navcen.uscg.gov MILITARY- LT BRIAN BARKER, 2 SOPS NAVIGATION ANALYST, DSN S60-6378. COMM 719-567-6378. GPS@FAFB.AF.MlL,. HTTP://WWW.FAFB.AF.MlL/GPS

UNUSABLE TEMPLATE

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 1997113
SUBJ: SVN43 (PRN13) UNUSABLE JDAY 298/0200 -JDAY 298/1400
1. NANU TYPE: UNUSABLE
    NANU NUMBER: 1997113
    NANU DTG: 170227Z OCT 1997
    REFERENCE NANU: 1997110
    REF NANU DTG: 021345Z OCT 1997
    SVN: 43
    PRN: 13
    START JDAY: 298
    START TlME ZULU 0200
    START CALENDAR DATE: 25 OCT 1997
    STOP JDAY: 298
    STOP TIME ZULU: 1400
    STOP CALENDAR DATE: 25 OCT 1997
2. CONDITION: GPS SATELLITE SVN43 (PRN13) WAS UNUSABLE ON JDAY 298 (25 OCT 1997) BEGINNlNG 0200 ZULU UNTIL JDAY 298 (25 OCT 1997) ENDING 1400 ZULU.
3. POC: CIVILIAN - NAVCEN AT (703) 313-5900, HTTP://www.navcen.uscg.gov MILITARY - LT BRIAN BARKER. 2 SOPS NAVIGATION ANALYST. DSN 560-6378, COMM 719. 567-6378, GPS@FAFB.AF.MIL. HTTP://WWW.FAFB.AF.MIL/GPS

UNUSUFN TEMPLATE

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 1997113
SUBJ: SVN43 (PRNl3) UNUSABLE JDAY 298/0200 -UNTIL FURTHUR NOTICE
1. NANU TYPE:UNUSUFN
    NANU NUMBER: 1997113
    NANU DTG: 170227Z OCT 1997
    REFERENCE NANU: N/A
    REF NANU DTG: N/A
    SVN: 43
    PRN: 13
    START JDAY: 298
    START TIME ZULU: 0200
    START CALENDAR DATE: 25 OCT 1997
    STOP JDAY: UFN
    STOP TIME ZULU: N/A
    STOP CALENDAR DATE: N/A
2. CONDITION: GPS SATELLITE SVN43 (PRNl3) IS UNUSABLE AS OF JDAY 298 (25 OCT 1997) BEGINNING 0200 ZULU UNTIL FURTHUR NOTICE.
3. POC: CIVILIAN - NAVCEN AT (703) 313-5900. HTTP://www.navcen.uscg.gov MILITARY - LT BRIAN BARKER 2 SOPS NAVIGATION ANALYST, DSN S60-6378, COMM 719--S67-6378, GPS@FAFB.AF.MIL, HTTP://WWW.FAFB.AF.MIL/GPS

UNUNOREF TEMPLATE

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 1997113
SUBJ: SVN43 (PRNl3) UNUSABLE JDAY 298/0200 - JDAY 298/1400
1. NANU TYPE: UNUNOREF
    NANU NUMBER: 1997113
    NANU DTG: 170227Z OCT 1997
    REFERENCE NANU: N/A
    REF NANU DTG: N/A
    SVN: 43
    PRN: 13
    START JDAY: 298
    START TIME ZULU: 0200
    START CALENDAR DATE: 25 OCT 1997
    STOP JDAY: 298
    STOP TlME ZULU: 1400
    STOP CALENDAR DATE: 25 OCT 1997
2. CONDITION: GPS SATELLITE SVN43 (PRNl3) WAS UNUSABLE ON JDAY 298 (25 OCT 1997) BEGTNNING 0200 ZULU UNTIL JDAY 298 (25 OCT 1997) ENDING 1400 ZULU.
3. POC: CIVILIAN - NAVCEN AT (703) 3 13-5900, HTTP://www.navcen.uscg.gov MILITARY - LT BRIAN BARKER 2 SOPS NAVIGATION ANALYST. DSN 560-6378. COMM 719--567-6378, GPS@FAFB.AF.MIL. HTTTP://WWW FAFB.AF.MIL/GPS