NOTICE ADVISORY TO NAVSTAR USERS (NANU) #072-91093
SUBJ: PRN6 UNUSABLE 93/1616-93/1640
1. CONDITION: PRN6 (MCS: SVN3) WAS UNUSABLE ON DAY 93 (3 APR 91)
BEGINNING 1616 UTC UNTIL DAY 93 AT 1640 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.