NOTICE ADVISORY TO NAVSTAR USERS (NANU) #086-91117
SUBJ: PRN6 UNUSABLE DAY 117/0700-117/0712 UTC
1. CONDITION: PRN6 (MCS: SVN3) WAS UNUSABLE ON DAY 117 (27 APR 91)
BEGINNING 0700 UTC UNTIL DAY 117 AT 0712 UTC.
2. RECOMMENDATION: CONFIRM AVAILABILITY OF SATELLITES PRIOR TO USE.
3. POINT OF CONTACT: MAJOR FAUVER AT COMMERCIAL (719)550-6379
OR DSN: 560-6379.