NOTICE ADVISORY TO NAVSTAR USERS (NANU) #099-90136
SUBJ: UPDATE TO SATELLITE REPOSITIONING SCHEDULE
1. CONDITION: CHANGE PRN 12 REPOSITIONING INITIATE DATE FROM 20
MAY TO 21 MAY 90. ADD PRN20 REPOSITIONING INITIATE ON 5 JUN 90.
2. RECOMMENDATION: CONFIRM AVAILABILITY OF SATELLITES PRIOR TO USE.
SATELLITES WILL BE SET UNUSABLE FOR UP TO 24 HOURS FOLLOWING
MANEUVER.
3. SATELLITE REPOSITIONING: NOTE CHANGE TO PRN12 SCHEDULE AND
ADDITION OF PRN 20 TO SCHEDULE.
PRN  INITIATE  TERMINATE 1 TERMINATE 2 UNUSABLE (DAY/UTC)
11   15 MAR 90 31 OCT 90               74/0335-75/0225   ACTUAL
 3   20 MAR 90 17 OCT 90               79/0700-79/1220   ACTUAL
13   29 MAR 90  3 OCT 90               88/0142-88/1105   ACTUAL
18    7 APR 90 24 NOV 90   8 DEC 90    97/0318-97/1902   ACTUAL
19   11 APR 90                        101/0421-101/0634  RESCHD
19   12 APR 90 31 DEC 90              102/0440-102/1411  ACTUAL
 9   19 APR 90 19 APR 90              109/2126-110/2126  RESCHD
 9   21 APR 90 21 APR 90              111/1035-111/1440  ACTUAL
16   26 APR 90 20 SEP 90              116/0736-116/1509  ACTUAL
 2    3 MAY 90  1 DEC 90              123/1906-124/0646  ACTUAL
14   14 MAY 90 10 NOV 90              134/0116-134/1013  ACTUAL
12   21 MAY 90 22 MAY 90              141/2056-142/2056  FORECAST
20    5 JUN 90  6 JUN 90              156/0025-157/0025  FORECAST
4. POINT OF CONTACT: MAJ WILLIAM FAUVER AT COMMERCIAL (719)550-6379
OR AUTOVON 560-6379.