NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2007081 NANU TYPE: GENERAL 
*** GENERAL MESSAGE TO ALL GPS USERS ***

ON 27 JUN 2007, AFTER 2200 ZULU, GPS WILL TRANSITION SVN23 (PRN32) INTO THE BROADCAST ALMANACS FOR ALL SATELLITES.  THIS ALMANAC TRANSITION, ONE SATELLITE AT A TIME, WILL REQUIRE APPROXIMATELY 24 HOURS TO COMPLETE.  BEFORE, DURING, AND AFTER TRANSITION, 
SVN23 (PRN32) WILL REMAIN UNUSABLE UNTIL FURTHER NOTICE.  FUTURE NANUS WILL NOTIFY USERS OF ANY CHANGES TO THE ABOVE-STATED STATUS.  ANYONE EXPERIENCING PROBLEMS WITH PRN32 SHOULD CONTACT THE APPROPRIATE AGENCY LISTED BELOW.

POC: 
CIVILIAN - NAVCEN AT COMM 703-313-5900, HTTP://WWW.NAVCEN.USCG.GOV 
MILITARY - GPS OPERATIONS CENTER AT DSN 560-2541 OR COMM. 719-567-2451, HTTP://GPS.AFSPC.AF.MIL/GPSOC/ 
MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN 276-9994 OR COMM. 805-606-9994, 
EMAIL JSPOC COMBAT OPS at VANDENBERG.AF.MIL 


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