ACE Weekly 03/04/05 - 03/10/05

All ACE spacecraft subsystems are performing nominally.

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Orbit/Attitude:

No attitude maneuvers were completed this week.  The next attitude maneuver
is scheduled for Friday 03/11/05.  Station-Keeping #35 is scheduled for
Thursday 03/17/05.

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OCRs:

None

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Ongoing Activities:

Space Link Extension (SLE) - ACE SLE Requirements are being finalized and
the Test Plan is being generated.

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Extra Activities:

DOY 068 support was released for GOES-12 spacecraft emergency.  Time was
acquired with DSS-66 on DOY 069 to playback recorded data.

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Anomalies:

DOY 063 (03/04/05) ACE Anomaly G05-0032  ROBOTT did not Retrieve Schedule
ROBOTT has a known intermittent problem (CDSID 00021136) that prevents the
schedule from being retrieved.  This was discovered on DOY 063 and ROBOTT
was manually started.
IMPACT:  Minimal given FOT intervention.

DOY 064 (03/05/05) ACE Anomaly S05-0009  SWICS PAPS -5V Limit Violations
SSCPAM5V had 2 brief (<24 seconds) red limit violations at 064:18:32:56 and
064:18:44:56.  Jim Raines notified.
IMPACT:  Jim Raines is investigating.

DOY 065 (03/06/05) ACE Anomaly G05-0033  MAD 26m (DSS-66) Late Acquisition
Station had difficulties acquiring lock at AOS.  DR#N102716
IMPACT:  Activities delayed 7 minutes.

DOY 067 (03/08/05) ACE Anomaly G05-0034  GDS (DSS-27) Antenna Red
DSS-27 was unable to move antenna to point.  Time with DSS-16 was released
by Maintenance for a 3.5 hour ACE support.  DR#G105393
IMPACT:  Minimal. All data captured.

DOY 069 (03/10/05) ACE Anomaly G05-0035  ROBOTT/C&C Froze
ROBOTT/C&C froze for unknown reasons 5 minutes before EOT (1st of the days 2
supports).  Developers will be notified.
IMPACT:  Minimal.  No commanding was required in last 5 minutes of support.

DOY 069 (03/10/05) ACE Anomaly G05-0036  GDS (DSS-27) Antenna Red
DSS-27 continues to be red and unable to support scheduled passes.  Time
with DSS-66 was released by SOHO for a 1.5 hour ACE support.  DR#G105399
IMPACT:  Minimal. All data captured.