NOTICE ADVISORY TO NAVSTAR USERS (NANU) #092-91130
SUBJ: PRN12 UNUSABLE 130/0250 UTC
1. CONDITION: PRN12 (MCS: SVN10) WAS UNUSABLE ON DAY 130 (10 MAY 91)
BEGINNING 0250 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.