NOTICE ADVISORY TO NAVSTAR USERS (NANU) #024-96026 SUBJ: PRN19 UNUSABLE 026/1525 UNTIL FURTHER NOTICE 1. CONDITION: GPS SATELLITE PRN19 (SVN19) WAS UNUSABLE ON JDAY 026 (26 JAN 96) BEGINNING 1525 ZULU UNTIL FURTHER NOTICE. 2. POC: NAVIGATION ANALYST AT COMMERCIAL (719) 567-6378 OR DSN 560-6378.