NOTICE ADVISORY TO NAVSTAR USERS (NANU) #054-92092
SUBJ: PRN 20 UNUSABLE 092/0615 UNTIL FURTHER NOTICE.
1. CONDITION: PRN20(MSC: 20) WAS UNUSABLE ON DAY 092 (1 APR 92)
BEGINNING 0615 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: LT WINGATE AT COMMERCIAL (719)550-6379 OR DSN 560-6379.