NOTICE ADVISORY TO NAVSTAR USERS (NANU) #014-90026 SUBJ: CORRECTION TO NANU 013-90026 PRN19 UNUSABLE UNTIL 28/0400UTC 1. CONDITION: NOTICE ADVISORY M013-90026 INCORRECTLY IDENTIFIED PRN19/SVN19 AS BEING USABLE ON 26 JAN 90 (DAY 26) BEGINNING AT 0626UTC. PRN19 WAS SET UNUSABLE (UNHEALTH) ON 14 JAN 90 (DAY 90) AT 2000UTC AND WILL CONTINUE IN TEST STATUS UNTIL 28 JAN 90 (DAY 29) ENDING 0400UTC. REFER TO NOTICE ADVISORY 006-90011. 2. RECOMMENDED ACTION: DISREGARD NOTICE ADVISORY 013-90026. 3. POINT OF CONTACT: MAJOR FAUVER AT (719)550-6379 OR AV560-6379.