NOTICE ADVISORY TO NAVSTAR USERS (NANU) #055-91055
SUBJ: PRN3 UNUSABLE 54/1708-54/1730 UTC
1. CONDITION ON DAY 55 (24 FEB 91):
A. PRN3 (MCS: SVN11) WAS UNUSABLE ON DAY 54 (23 FEB 91) BEGINNING
1708 UTC UNTIL DAY 54 AT 1730 UTC.
B. PRN9 (MCS: SVN6) USABLE OVER WESTERN NORTH AMERICA (WNA) AND
PERSIAN GULF AREA (PGA). L-BAND-ON SEVEN DAY FORECAST:
DAY DATE      L-BAND-ON WNA   L-BAND-ON PGA
55  24 FEB 91 55/0428-55/0628 55/1641-55/1856
56  25 FEB 91 56/0424-56/0624 56/1637-56/1852
57  26 FEB 91 57/0420-57/0620 57/1633-57/1848
58  27 FEB 91 58/0416-58/0616 58/1629-58/1844
59  28 FEB 91 59/0412-59/0612 59/1625-59/1840
60  01 MAR 91 60/0408-60/0608 60/1621-60/1836
61  02 MAR 91 61/0404-61/0604 61/1617-61/1832
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.