ACE Weekly 04/22/05 - 04/28/05

All ACE spacecraft subsystems are performing nominally.

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Orbit/Attitude:

	Type         Attitude #1   Attitude #2
	Date         04/22/05      04/22/05
	DOY          112 2005      112 2005
	Thrusters    2R 4R+ 4R-    2R 4R+ 4R-
	Duration     6:32 min      7:47 min
	Start Time   17:07:54z     18:32:26z
	Stop Time    17:14:26z     18:40:13z
	Firing       33 pulses     40 pulses

The next attitude maneuver is scheduled for Monday 05/09/05.

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OCRs:

None

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Ongoing Activities:

Space Link Extension (SLE) - The design review is scheduled for Tuesday
05/10/05.

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Extra Activities:

DOY 117 (04/27/05) - Inactive C&DH (C&DH B) Autonomy Bins downlinked.

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Anomalies:

DOY 112 (04/22/05) ACE Anomaly G05-0063  26m GDS DSS-16 Transmitter Problems
At BOT station had problems with the Power Amplifier and switched to the
backup.  DR#G105560
IMPACT:  Activities delayed 15 minutes.

DOY 112 (04/22/05) ACE Anomaly G05-0064  26m GDS DSS-16 CMD Mod Index
At 18:19:19 CMDs were not being received by the spacecraft.  Station
re-entered CMD Mod Index.  DR#G105561
IMPACT:  Attitude maneuver delayed 10 minutes.

DOY 115 (04/25/05) ACE Anomaly G05-0065  26m MAD DSS-66 Transmitter Problems
At BOT station had problems with the SBE DR#M103173 & M103174.
IMPACT:  Activities delayed 15 minutes.

DOY 116 (04/26/05) ACE Anomaly G05-0066  Printer Problems
Printer AC3PR3 had intermittent problems since the security scan was done on
04/13/05.  Power off and on resolved problem.
IMPACT:  Minimal.

DOY 117 (04/27/05) ACE Anomaly G05-0067  Intermittent TLM Loss due to
Network
17:47-17:54, JPL's SFG (Special Function Gateway) had problems that
prevented data flow to the MOC during redumps.
IMPACT:  All playback data was captured.

DOY 117 (04/27/05) ACE Anomaly S05-0012  SSR Housekeeping Data
SSR B was switched to C&DH B as part of the nominal Inactive C&DH Autonomy
Bin checkout.  By coincidence, SSR B was halfway through sending
housekeeping data to C&DH A when it received the command to connect to C&DH
B.  C&DH A received the rest of the parameters as 0xFF.  Since the first
half of housekeeping data was valid, TPOCC flagged the second half of the
housekeeping data.  When SSR B was reconnected to C&DH A, all data was
valid.
IMPACT:  Minimal.  A valid SSRB_TLM_HEADER caused TPOCC to incorrectly
decommutate and flag parameters VALID_COM_CT_B through ERROR_CT_B.

DOY 118 (04/28/05) ACE Anomaly G05-0068  26m GDS DSS-16 CMD Mod Index
At BOT CMDs were not being received by the spacecraft.  Station re-entered
CMD Mod Index.  DR#G105592
IMPACT:  Activities delayed 30 minutes.