NOTICE ADVISORY TO NAVSTAR USERS (NANU) #003-90006 SUBJ: PRN17/SVN17 L1/L2 ENABLED DURING TESTING 1. CONDITION: PRN17/SVN17 L1/L2 ENABLED DURING TESTING JDAY006 AT 0330UTC 90/JDAY006 AT APPROXIMATELY 0330UTC. THE SATELLITE HAS NOT BEEN DECLARED OPERATIONAL AND IS UNDERGOING TESTING THAT MAY RESULT IN PRN17/SVN17 BEING SET UNUSABLE WITHOUT ADVANCE NOTIFICATION. 2. RECOMMENDED ACTION: USE PRN17/SVN17 AT YOUR OWN RISK UNTIL FURTHER NOTICE. 3. POINT OF CONTACT: MAJOR WILLIAM A. FAUVER, COMMERCIAL (719) 550-6379 OR AUTOVON 560-6379.