NOTICE ADVISORY TO NAVSTAR USERS (NANU) #098-91144
SUBJ: RECURRING OUTAGES: PRN6 BEGINNING 144/0015 - 144/0230 UTC
1. CONDITION: THE PRN6 (MCS:SVN3) NAVIGATION SIGNAL (L-BAND) WILL
BE TURNED OFF ON DAY 144 (24 MAY 91) BEGINNING 0015 UTC UNTIL DAY
144 AT 0230 UTC. A SECOND OUTAGE MAY OCCUR ON DAY 144 BETWEEN 0730
UTC AND 0915 UTC. THIS SCHEDULE OF L-BAND CYCLING MAY CONTINUE
UNTIL FURTHER NOTICE. WHEN THE L-BAND IS TURNED OFF, PRN6 IS
UNAVAILABLE TO ALL USERS. ADDITIONAL OUTAGES MAY OCCUR WITHOUT
WARNING. DETAILS WILL BE PROVIDED AS THEY BECOME AVAILABLE.
2. RECOMMENDATION: CONFIRM AVAILABILITY OF SATELLITES PRIOR TO USE.
3. POINT OF CONTACT: MAJOR FAUVER AT COMMERCIAL (719)550-6379
OR DSN: 560-6379.