ACE Weekly Report:  06-20-01

All ACE spacecraft subsystems are performing nominally.  An attitude
maneuver was successfully performed on 06-15-01.  The next attitude
maneuver is scheduled for 06-22-01.

Several OCRs were executed as part of continuing diagnostic efforts
to fix the ULEIS shutter motion problem.  OCR ULEIS-051 was completed
on 06-14-01 (DOY 165);  part one had been executed on 06-13-01.  OCR
ULEIS-052 was executed on 06-15-01 and OCR ULEIS-053 on 06-18-01.

The SEPICA Instrument team submitted a command request to begin
recovery activities.  SEPICA had been ramped down by the S3DPU and
placed in 'Standby' mode on May 27th  (DOY 147).  Several OCRs were
executed on 06-14-01 (DOY 165) to place SEPICA in 'Manual' mode and
enable its 30kV and 75kV power supplies.  In addition the 30kV power
supply setpoint was commanded to 2.0 kV.

No Anomaly reports were generated this week.

================================================
Jacqueline Maldonado Snell
Honeywell Technology Solutions Incorporated (HTSI)
Goddard Space Flight Center
Bldg. 3 Rm N135C, Code 428.2
Greenbelt, MD 20771
Phone: (301) 286-7072
Fax:   (301) 286-0218
E-mail:   Jacqueline.Snell.1@gsfc.nasa.gov