NOTICE ADVISORY TO NAVSTAR USERS (NANU) #097-91142
SUBJ: PRN6 UNUSABLE 142/1208-142/1220 UTC
1. CONDITION: PRN6 (MCS: SVN3) WAS UNUSABLE ON DAY 142 (22 MAY 91)
BEGINNING 1208 UTC UNTIL DAY 142 AT 1220 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.