NOTICE ADVISORY TO NAVSTAR USERS (NANU) #019-93026
SUBJ: PRN18 USABLE 025/2338 UTC
REF: NANU 005-93025 (DTG 121615ZJAN93)
1. CONDITION: PRN18 (SVN18) WAS UNUSABLE ON DAY 025 (25 JAN 93)
BEGINNING 2102 UTC UNTIL DAY 025 AT 2338 UTC.
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: 1LT SKINNER AT COMMERCIAL (719) 550-6378 OR DSN 560-6378.