ACE Weekly 04/01/05 - 04/07/05 All ACE spacecraft subsystems are performing nominally. ============================================================================ Orbit/Attitude: No attitude maneuvers were completed this week. The next attitude maneuver is scheduled for Friday 04/08/05. ============================================================================ OCRs: None ============================================================================ Ongoing Activities: Space Link Extension (SLE) - ACE SLE Requirements are being finalized and the Test Plan is being generated. ============================================================================ Extra Activities: DOY 097 (04/07/05) No impact to ground system during installation of UPS remote monitoring system. ============================================================================ Anomalies: DOY 091 (04/01/05) ACE Anomaly G05-0048 Erroneous Pass Change Message ROBOTT populated the 'passparm' file with duplicate view information when the next DOY or previous DOY corresponds to 092. 92 also happens to be the spacecraft code. CDSID 21179 IMPACT: No impact to scheduled activities found. DOY 094 (04/04/05) ACE Anomaly G05-0049 Mission Software Reboot At 1755z ROBOTT detected a problem with C&C and attempted a C&C restart. ROBOTT then rebooted all of the mission software. Software returned to operations at 1821z. Reason for restart/reboot unknown. IMPACT: No data loss, playback had already completed. Final state of health checks not performed. DOY 095 (04/05/05) ACE Anomaly G05-0050 Antenna Problems Problems with the Monitor Control Processor (MCP1) and Exciter/CMD Mod Index delayed activities 1hr 50min. DRs G105519 & G105521 IMPACT: Next day's support was extended and all playback data was captured. DOY 095 (04/05/05) ACE Anomaly G05-0051 C&C Software Froze C&C froze after the support and did not execute g_acedown. IMPACT: Procedure was executed manually. DOY 095 (04/06/05) ACE Anomaly G05-0052 DSN Schedule Not Updated The DSN schedule was not updated with the extended time. C&C was manually configured with new support times. C&C however did not execute g_aceup at the correct time. IMPACT: Procedures were executed manually.