NOTICE ADVISORY TO NAVSTAR USERS (NANU) #080-93103
SUBJ: FORECAST OUTAGE PRN20 DAY 103/0200 UTC FOR UP TO 8 HOURS
1. CONDITION: PRN20 (SVN20) IS SCHEDULED TO BE UNUSABLE ON
DAY 103 (13 APR 93) BEGINNING 0200 UTC FOR UP TO 8 HOURS DUE TO
MAINTENANCE. THE HISTORICAL MINIMUM FOR THIS TYPE OF MAINTENANCE
IS 5 HOURS.
2. THIS SCHEDULED MAINTENANCE WILL REPOSITION PRN20. USERS ARE
REMINDED TO UPDATE ALMANACS IF NECESSARY.
3. AFFECTED AREAS: GLOBAL EXCEPT FOR SOUTHERN EUROPE, AFRICA, AND
THE INDIAN OCEAN INCLUDING MADAGASCAR.
4. 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.
5. POC: CAPT HUTSELL AT (719) 550-6378 OR DSN 560-6378.