NOTICE ADVISORY TO NAVSTAR USERS (NANU) #001-93005 SUBJ: PRN29 USABLE 005/1639 1. CONDITION: PRN29 (SVN29) WAS USABLE ON DAY 05 (5 JAN 93) BEGINNING 1639 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: CPT JENSEN OR 1LT SKINNER AT COMMERCIAL (719) 550-6378 OR DSN 560-6378.