ACE Weekly 09/27/02 - 10/03/02 All ACE spacecraft subsystems are performing nominally. An attitude maneuver was executed this week with no problems to report. The next attitude maneuver is scheduled for 10/04/02. ============================================================================ OCRs Executed: NONE ============================================================================ Ongoing Activity: The HGA Angle Constraint Report is being reviewed and will be released in the near future. ============================================================================ Anomalies: DOY 02270 (09/27/02) ACE Anomaly #G02-0110 GDS(DSS-27) Telemetry Group Controller (TGC) Failure Telemetry was offline from 17:02:18 to 17:08:04 due to a lost interface with the TGC. TGC was rebooted but later failed at 17:17:02 causing a loss of telemetry until 17:21:16. The station switched to the backup TGC and pass activities continued. IMPACT: None. All telemetry lost was recovered on the next pass. DR #G101635 DOY 02273 (09/30/02) ACE Anomaly #S02-0022 SWICS PAP -5V RH Limit Violation At 15:35:30 SSCPAM5V read -4.5V for 24 seconds violating the limit value of -4.5V. IMPACT: Under investigation. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Glen A. Miller Honeywell Technology Solutions Inc. ACE Flight Operations Team Goddard Space Flight Center Building 14, Room W10A Mail Stop 428.2 Greenbelt, MD 20771 Office: 301-286-7071 Fax: 301-286-1729 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~