ACE Weekly 09/26/03 - 10/02/03

All ACE spacecraft subsystems are performing nominally.   The next attitude 
maneuver is scheduled for 10/03/03.

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Orbit Events:

The next SEV transit will occur November 26th through December 20th. The 
minimum SEV angle expected will be approximately 1.19 degrees.

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OCRs Executed:

NONE

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Ongoing Activities:

TAPS:
Trending, Analysis and Plotting System (TAPS) development continues with 
emphasis being placed on fixing the DRs attributed to prior releases.  A 
list of priority DRs has been submitted to SGT in order to focus attention 
on those requirements the FOT determined critical to transition. The final 
Release 4.1.8 date is 10/07/03.

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Automation (ROBOTT):

- ROBOTT version 0.2 was installed September 18th on String 1. The FOT 
initial checkout has been completed and operational activities have been 
transitioned back to String 1.
- Automation Team testing of HSM and Command & Control on String 3 
continues. C&C is shadowing passes and an expected delivery date to the FOT 
is early October.
- The first draft of the SUG is expected soon.

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Anomalies:

DOY 03269 (09/26/2003) ACE Anomaly G03-0088 - GDS (DSS-16) Data Dropout/TCP 
Problem
At 14:52:15, telemetry dropped out from DSS-16.  The station was notified 
of the dropout.  At 14:54, DSS-16 stated the problem was with the TCP but 
encountered problems when attempting to reboot the equipment.  At 14:55:00, 
DSS-16 successfully swapped from TCP-1 to TCP-2.  At 14:56:09, telemetry 
was back online.  IMPACT: Telemetry offline from 14:52:15 to 14:56:09 (3 
min. 54 secs.).  Data recoverable from CDR.  Delayed the start of daily 
activities. DR# G103398

DOY 03275 (10/02/2003) ACE Anomaly G03-0089 - DPS Unable to Process Data on 
String 1
Received alarms on String 1 DPS indicating Data Processing 
problems.  Manually shutdown the DPS processes and restarted them, but the 
same errors occurred.  Discussed problem with OE, two more attempts to 
start preprocessing manually also failed.
IMPACT: No Level 0 products were created on the backup string.  Problem did 
not affect the operational string.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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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