NOTICE ADVISORY TO NAVSTAR USERS (NANU) #007-91007
SUBJ: PRN23 REPOSITIONING: UNUSABLE 011/1315-012/1315 UTC
1. CONDITION: PRN23 (MCS: SVN23) IS EXPECTED TO BE UNUSABLE DUE TO
REPOSITIONING (STATION KEEPING) BEGINNING DAY 011 (11 JAN 91) AT
APPROXIMATELY 1315 UTC FOR UP TO 24 HOURS.
2. RECOMMENDATION: CONFIRM AVAILABILITY OF SATELLITES PRIOR TO USE.
ALMINAC DATA FOR PRN23 SHOULD BE UPDATED FOLLOWING THE MANEUVER.
3. POINT OF CONTACT: MAJ WILLIAM FAUVER AT COMMERCIAL (719)550-6379
OR AUTOVON 560-6379.