NOTICE ADVISORY TO NAVSTAR USERS (NANU) #058-94046 SUBJ: PRN12 UNUSABLE 045/2207-045/2235 1. CONDITION: PRN12 (SVN10) WAS UNUSABLE ON DAY 045 (14 FEB 94) BEGINNING 2207 UTC UNTIL DAY 045 AT 2235 UTC. 2. POC: CAPT THOMPSON AT COMMERCIAL (719) 550-6378 OR DSN 560-6378.