NOTICE ADVISORY TO NAVSTAR USERS (NANU) #089-91121
SUBJ: PRN11 UNUSABLE DAY 121/1014-121/1030 UTC
1. CONDITION: PRN11 (MCS: SVN8) WAS UNUSABLE ON DAY 121 (1 MAY 91)
BEGINNING 1014 UTC UNTIL DAY 121 AT 1030 UTC.
2. RECOMMENDATION: CONFIRM AVAILABILITY OF SATELLITE PRIOR TO USE.
3. POINT OF CONTACT: MAJOR FAUVER AT COMMERCIAL (719)550-6379
OR DSN: 560-6379.