NOTICE ADVISORY TO NAVSTAR USERS (NANU) #071-94049 SUBJ: PRN13 UNUSABLE 049/2045-049/2046 1. CONDITION: PRN13 (SVN09) WAS UNUSABLE ON DAY 049 (18 FEB 94) BEGINNING 2045 UTC UNTIL DAY 049 AT 2046 UTC. 2. POC: CAPT THOMPSON AT COMMERCIAL (719) 550-6378 OR DSN 560-6378.