NOTICE ADVISORY TO NAVSTAR USERS (NANU) #041-92077
SUBJ: PRN13 UNUSABLE 077/1951-077/1952
1. CONDITION: PRN13 (SVN9) WAS UNUSABLE ON DAY 077 (17 MAR 92)
BEGINNING 1951 UTC UNTIL DAY 077 AT 1952 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 INGEGNERI AT COMMERCIAL (719) 550-6379 OR DSN 560-6379.