NOTICE ADVISORY TO NAVSTAR USERS (NANU) #040-94038 SUBJ: PRN13 UNUSABLE 036/2151-036/2203 1. CONDITION: PRN13 (SVN9) WAS UNUSABLE ON DAY 036 (05 FEB 94) BEGINNING 2251 UTC UNTIL DAY 036 AT 2203 UTC. 2. POC: CAPT THOMPSON AT COMMERCIAL (719) 550-6378 OR DSN 560-6378.