NOTICE ADVISORY TO NAVSTAR USERS (NANU) #295-93251 SUBJ: PRN29 USABLE 251/2216 1. CONDITION: PRN29 (SVN29) WAS UNUSABLE ON DAY 246 (03 SEP 93) BEGINNING 0918 UTC UNTIL DAY 251 AT 2216 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: CAPT THOMPSON AT COMMERCIAL (719L 550-6378 OR DSN 560-6378.