NOTICE ADVISORY TO NAVSTAR USERS (NANU) #071-91089
SUBJ: PRN3 UNUSABLE 089/0454-089/0505 UTC
1. CONDITION: PRN3 (MCS: SVN11) WAS UNUSABLE ON DAY 089 (30 MAR 91)
BEGINNING 0454 UTC UNTIL DAY 089 AT 0505 UTC.
2. RECOMMENDATION: CONFIRM AVAILABILITY OF SATELLITES PRIOR TO USE.
3. POC: MAJOR FAUVER AT COMMERCIAL (719)550-6379 OR DSN: 560-6379.