NOTICE ADVISORY TO NAVSTAR USERS (NANU) #005-93025
SUBJ: FORECAST OUTAGE PRN18 DAY 025/2100 UTC FOR UP TO 2 HOURS
1. CONDITION: PRN18 (SVN18) IS EXPECTED TO BE UNUSABLE ON DAY
025 (25 JAN 92) BEGINNING 2100 UTC FOR UP TO 2 HOURS DUE TO
SCHEDULED MAINTENANCE. SCHEDULED MAINTENANCE WILL NOT
REPOSITION PRN18.
2. AFFECTED AREAS: GLOBAL EXCEPT FOR SOUTH AMERICA, SOUTHERN
EUROPE, AFRICA, SOUTHWEST ASIA, AND ANTARCTICA.
3. 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.
4. POC: LT SKINNER (USAF) AT (719) 550-6378 OR DSN 560-6378.