NOTICE ADVISORY TO NAVSTAR USERS (NANU) #044-92083 SUBJ: PRN03 UNUSABLE 083/1600-083/1614 1. CONDITION: PRN03 (SVN11) WAS UNUSABLE ON DAY 083 (23 MAR 92) BEGINNING 1600 UTC UNTIL DAY 083 AT 1614 UTC. 2. USERS OF GPS ARE CAUTIONED THAT THE SYSTEM IS NOT YET FULLY OPERATIONAL. SIGNAL AVAILABILITY AND ACCURACY ARE SUBJECT TO CHANGE DUE TO AN INCOMPLETE CONSTELLATION AND OPERATIONAL TEST ACTIVITIES. 3. POC: 1LT WINGATE (USA) AT (719) 550-6380 OR DSN 560-6380.