NOTICE ADVISORY TO NAVSTAR USERS (NANU) #035-91035
SUBJ: PRN6 UNUSABLE DAY 35 0802-0954 UTC
1. CONDITION ON DAY 34 (3 FEB 91):
A. PRN9 (MCS: SVN6) USABLE OVER WESTERN NORTH AMERICA (WNA) AND
PERSIAN GULF AREA (PGA). L-BAND-ON FORECAST FOR THE NEXT SEVEN
DAYS:
DAY DATE      L-BAND-ON WNA   L-BAND-ON PGA
35  04 FEB 91 35/0546-35/0746 35/1801-35/2016
36  05 FEB 91 36/0542-36/0742 36/1757-36/2012
37  06 FEB 91 37/0538-37/0738 37/1743-37/2008
38  07 FEB 91 38/0534-38/0734 38/1739-38/2004
39  08 FEB 91 39/0530-39/0730 39/1735-39/2000
40  09 FEB 91 40/0526-40/0726 40/1731-40/1956
41  10 FEB 91 41/0522-41/0722 41/1727-41/1952
B. PRN6 (MCS: SVN3) WAS UNUSABLE ON DAY 35 BEGINNING 0802 UTC UNTIL
DAY 35 AT 0954 UTC.
THE L-BAND OF PRN6 WILL BE DISABLED AS BELOW:
DAY DATE      UNUSABLE (UTC)  ACTUAL (UTC)
35  04 FEB 91 35/0815-35/1000 35/0802-35/0954
36  05 FEB 91 36/0815-36/1000
37  06 FEB 91 37/0815-37/1000
2. RECOMMENDATION: PRN6 WILL BE UNUSABLE FOR NAVIGATION OR
POSITIONING DURING THESE OUTAGES. CONFIRM AVAILABILITY OF
SATELLITES PRIOR TO USE.
3. POINT OF CONTACT: MAJ WILLIAM FAUVER AT COMMERCIAL (719)550-6379
OR AUTOVON 560-6379.