NOTICE ADVISORY TO NAVSTAR USERS (NANU) #091-93103
SUBJ: PRN20 USABLE 103/1801
REF: NANU 090-93103 DTG 131232ZAPR93
1. CONDITION: PRN20 (SVN20) WAS UNUSABLE ON DAY 103 (13 APR 93)
BEGINNING 0233 UTC UNTIL DAY 103 AT 1801 UTC. PRN20 WAS SCHEDULED
FOR MAINTENANCE FROM DAY 103/0200 FOR UP TO 8 HOURS. THE SCHEDULED
MAINTENANCE ACTIVITY WAS ACCOMPLISHED.
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: CAPT HUTSELL AT COMMERCIAL (719) 550-6378 OR DSN 560-6378.