NOTICE ADVISORY TO NAVSTAR USERS (NANU) #054-91054 SUBJ: L-BAND-ON SCHEDULE FOR PRN9 1. CONDITION ON DAY 54 (23 FEB 91): 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 SEVEN DAY FORECAST: 54 23 FEB 91 54/0432-54/0632 54/1645-54/1900 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 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.