ACE Weekly Report:  03-07-01

All ACE spacecraft subsystems are performing nominally.  An attitude
maneuver was performed on 03-02-01.  The next attitude maneuver is
scheduled for 03-09-01.

Maneuver Start Time=15:43:57	Attitude Maneuver End Time=15:49:47
Pre-Maneuver  HGA = -2.54 deg.  Sun Angle =  12.43 deg.
Post-Maneuver  HGA=  4.28 deg.  Sun Angle =   5.82 deg.
Current S/C range:  1499233.965 km

Total Percentage Data Capture February 1-28:  99.976%

On DOY 064 (03-04-01) FOT executed OCR SWPX-028 to uplink flight
software load.  Experimenter will continue to monitor instrument
status.

Anomalies:
G01-0021:  During the precal segment, station 27 failed to see test
commands sent from the MOC. They reported that they would need to
reboot the LMC. After this reboot, the Test Commands and NO_OP
commands were received, and the support continued through AOS until
14:32:48 when the Timing System failed and all telemetry to the MOC
ceased. Station 27 personnel attempted to correct the problem and
bring the system back online but were unsuccessful. The MOC contacted
the Ops Chief and coordinated a support transfer to station 16. At
approximately 15:31 UT, telemetry was restored and Station 16
completed the support with no problems. All affected SSR slices were
redumped during the D16 support (DR #G06791).

S01-0002:  On DOY 060 (03-01-01) ACE executed OCR ULEIS-034 per the
instrumenter's request.  Nominally the FOT manually close the ULEIS
shutter prior to a major solar event and manually open it following
its conclusion.  The commands sent on 3-01-01 were to place the ULEIS
shutter in an autonomous mode so that it would self-regulate the
opening and closing of its shutter.  Approximately 45 minutes after
the command activities had completed the FOT was notified that ULEIS
had closed its shutter.  A new OCR was submitted by the instrumenter
and executed to disable autonomous motor motion and return the
shutter to the 100% position via discrete command.  "ULEIS suffered
absolutely no harmful effects, missing only a brief amount of
observation time during an extremely quiet period. While the shutter
was closed we acquired roughly 45 minutes worth of calibration data
with our alpha sources. The programmer was made aware of the problem
and based on the behavior of the instrument, was able to isolate the
code section at fault and discover the bug. At a future date we will
evaluate whether a software upload to fix the problem is warranted."