NOTICE ADVISORY TO NAVSTAR USERS (NANU) #021-93028
SUBJ: PRN12 UNUSABLE 028/0547-028/0600
1. CONDITION: PRN12 (SVN10) WAS UNUSABLE ON DAY 028 (28 JAN 93)
BEGINNING 0547 UTC UNTIL DAY 028 AT 0600 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 SKINNER AT COMMERCIAL (719) 550-6378 OR DSN 560-6378.