NOTICE ADVISORY TO NAVSTAR USERS (NANU) #082-90110
SUBJ: PRN20 AVAILABLE 108/2313 IN PLANE/SLOT B3
1. CONDITION: PRN20 WAS SET AVAILABLE ON DAY 108 (18 APR 90)
BEGINNING 2313 UTC. ALTHOUGH PRN20 WILL BE USABLE FOR NAVIGATION
AND TIMING, THE SATELLITE HAS NOT BEEN DECLARED OPERATIONAL AND IS
UNDERGOING TESTING THAT MAY RESULT IN PRN20 BEING SET UNUSABLE
WITHOUT ADVANCE NOTIFICATION.
2. RECOMMENDATION: ORBITAL ELEMENTS FOR PRN20 ARE AVAILABLE IN THE
BROADCAST ALMANAC. USERS MAY BEGIN PLANNING ACTIVITIES WITH PRN20.
3. POINT OF CONTACT: MAJ WILLIAM FAUVER AT COMMERCIAL (719)550-6379
OR AUTOVON 560-6379.