NOTICE ADVISORY TO NAVSTAR USERS (NANU) #004-95007 SUBJ: PRN25 UNUSABLE 007/1938- UNTIL FURTHER NOTICE 1. CONDITION: PRN25 (SVN25) WAS UNUSABLE ON DAY 007 (07 JAN 94) BEGINNING 1938 UTC UNTIL FURTHER NOTICE. 2. POC: CPT PETERSON AT COMMERCIAL (719) 550-6378 OR DSN 560-6378.