NOTICE ADVISORY TO NAVSTAR USERS (NANU) #058-93076
SUBJ: PRN18 UNUSABLE 076/1515
REF: NANU 044-93076 (MSG DTG 251421 FEB 93)
1. CONDITION: PRN18 (SVN18) WAS UNUSABLE ON DAY 076 (17 MAR 93)
BEGINNING 1515 UTC UNTIL FURTHER NOTICE.
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 HUTSELL AT COMMERCIAL (719) 550-6378 OR DSN 560-6378.