NOTICE ADVISORY TO NAVSTAR USERS (NANU) #098-90136
SUBJ: PRN9 UNUSABLE 136/1451-136/1535
1. CONDITION: PRN9 WAS UNUSABLE ON DAY 136 (16 MAY 90) BEGINNING
1451 UTC UNTIL DAY 136 AT 1535 UTC.
2. RECOMMENDATION: CONFIRM AVAILABILITY OF SATELLITES PRIOR TO USE.
3. POINT OF CONTACT: MAJ WILLIAM FAUVER AT COMMERCIAL (719)550-6379
OR AUTOVON 560-6379.