NOTICE ADVISORY TO NAVSTAR USERS (NANU) #061-94047 SUBJ: PRN03 SET UNUSABLE DAY 047 AT 2300 UTC. 1. CONDITION: PRN03 (SVN11) WAS UNUSABLE ON DAY 047 (16 FEB 94) BEGINNING 2300 UTC UNTIL FURTHER NOTICE. 2. USERS OF GPS ARE CAUTIONED THAT THE SYSTEM IS NOT YET FULLY OPERATIONAL. 3. POC: CAPT THOMPSON AT COMMERCIAL (719) 550-6378 OR DSN: 560-6378.