ACE Weekly 03/19/04 - 03/25/04

All ACE spacecraft subsystems are performing nominally. An attitude 
maneuver was successfully executed on 03/25/04. The next attitude maneuver 
is tentatively scheduled for 04/02/04.

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Orbit Events:

Then next transit will occur in the May-June timeframe.

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OCRs Executed:

None

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Ongoing Activities:

TAPS:
- Transition from GTAS to TAPS occurred on 03/18/04. All trending 
activities are being accomplished using TAPS.  No problems have been noted 
to date.

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Automation (ROBOTT):
- Testing of Release 0.5 is progressing well. This release will not be 
placed on String 1.
- Failover monitor/CRON testing began 03/19/04 with some minor problems 
identified.
- ROBOTT Release 0.6 has a target date of 04/01/04. This release will not 
include any GTAS tasks and will include any fixed DRs at that time.
- A color allocation problem with TPOCC has been identified by the FOT that 
would preclude Automation (C&C) from operating completely "lights 
out".  Investigation into the problem is ongoing.

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Extra Spacecraft Activities:

- On 03/22/04, executed procedures C_INACT_BIN_RECORD & 
C_INACT_SSR_TO_ACTIVE to record C&DH B autonomy bin data to SSR-B for later 
dumping and review.

- On 03/24/04, executed procedures C_INACT_BIN_RECORD & 
C_INACT_SSR_TO_ACTIVE to record C&DH B time-tag data to SSR-B for later 
dumping and review.

- Received S3DPU Anti-Reset Patch and Unpatch loads from M. Popecki.  The 
loads have been built and reviewed by both M. Popecki and the FOT.  The 
upload procedure has been modified and is currently under 
review.  Uploading of the Anti-Reset patch will possibly occur within the 
next month pending finalization of the sequence of events and concurrence 
of all parties concerned resulting in a signed-off OCR.  Additional details 
will be forthcoming.


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Anomalies:

DOY 04083 (03/23/04) ACE Anomaly G04-0022 - Telemetry Outage
At 18:22:01, telemetry dropped out from DSS-24 on string 1 (real-time 
string).  Seconds prior, telemetry went offline on string 2 and then string 
3.  In the event window on string 1 there were messages that indicated a 
problem with the fanout.  At 18:35:39 telemetry was back 
online.  Indications point to a router problem but was never confirmed 
through troubleshooting.  IMPACT: Delayed telemetry acquisition.  All 
telemetry was subsequently retrieved on next day's pass.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Glen A. Miller
ACE Flight Operations Observatory Engineer
Honeywell Technology Solutions Inc.
Goddard Space Flight Center
Building 14, Room W10A
Mail Stop 428.2
Greenbelt, MD 20771

Office: 301-286-7071
Pager: 800-425-3174
Fax:    301-286-1729
Email: gamiller@pop500.gsfc.nasa.gov
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