NOTICE ADVISORY TO NAVSTAR USERS (NANU) #012-94014 SUBJ: PRN13 UNUSABLE 014/1348-UFN 1. CONDITION: PRN13 (SVN09) WAS UNUSABLE ON DAY 014 (14 JAN 94) BEGINNING 1348 UTC UNTIL FURTHER NOTICE. 2. POC: CAPT THOMPSON AT COMMERCIAL (719) 550-6378 OR DSN 560-6378.