GE- 3/31/97 E6 Science Data Losses 048-08:07 ---> 089-16:46; Lost TFs in brackets[.....] Changes in Bold Time (GMT) DSS Reference RT Rcvd Events Comments Cause Array TFs Ops Lost from Related? PPT 048-22:42 43 DR# 37 35 The sta had to - Lost TFs S Yes A01050 reboot the [57005->57041] -> FSC,BTD, and 137 RTS & 5 049-01:27 FCD to recover Priority VCDUs the DGT from a FSC failure. - ***Recovered TFs [57005 & 57006, 56009 -> 57041] from FSR tape re-processing 049-17:22 14 DR# 3 0 Power glitch - Lost TFs F No G01080 at SPC10. [57152->57154] -> 17:43 12 RTS VCDUs 050-19:16 43 DR# 4 0 No FSC cross - Lost TFs S Yes A01054 correlation of [57419->57422] -> 19:33 DSS42. No 12 RTS VCDUs action was taken to achieve good cross correlation. 051-00:03 49 DR # 5 0 Bad router - Lost TFs S Yes A01057 interface [57502->57506] -> 00:20 between DSS49 20 RTS VCDUs and SPC40. The router was reset to restore the interface. 051-00:23 49 DR# 4 0 Bad router - Lost TFs S Yes A01057 interface [57508->57511] -> 00:37 between DSS49 16 RTS VCDUs and SPC40. The router was reset to restore the interface. 051-13:42 63 3 0 - Unknown - Lost TF U No [57627] 63 -> 14:51 & - BRC 20-8bps at 14:54 - Lost TF [ 14 57628] unrecoverable by either DSS - Lost TF [57629] 14 10 RTS & 2 Priority VCDUs 051-20:23 43 DR# 2 0 - Missed the - Lost TFs U No A01059 BRC 60-80bps [[57669 & 57670] -> 20:30 8 RTS VCDUs Europa Encounter occurred at 17:56 051-20:44 43 DR# 2 0 - The - Lost TFs PD No A01058 scheduled [57679 & 57680] -> 21:05 uplink 7 RTS & 1 transfer at Priority VCDUs 19:05 between DSS14 & DSS43 was delayed 10 minutes. 6 TFs were lost of which 2 contained non-fill tlm. 052-00:59 43 DR# 1 0 PCG tones, - Lost TF PD No A01060 used for VLBI, [57738] 4 RTS were turned VCDUs on. 052-04:52 43 DR# 1 0 - Unknown - Lost TFs U No A01059 [57789] 4 RTS - BRC 60-32bps VCDUs 052-19:28 43 1 1 - Unknown - Lost TF U No [57867] 4 RTS - This is VCDUs approximately the same time that the T-1 was released by GSFC. 052-19:55 43 DR# 7 0 - The DGT T-1 - Lost TFs PN No N42325 was released [57873->57879] -> 20:16 to the carrier 28 RTS VCDUs without authorization - The carrier returned the T-1 at 20:45z. 052-23:54 43 1 1 - LOS going - Lost TF PP No 1-way [57941] 1 RTS & 1 Priority VCDUs - PWS fill not scheduled until 23:56z 054-20:29 43 1 0 Missed BRC - Lost TF U U 80->120bps. [58400] 4 RTS VCDUs Time (GMT) DSS Reference RT Rcvd Events Comments Cause Array TFs Ops Lost from Related? PPT 056-16:15 14 1 0 Missed the - Lost TF U No first non-fill [58882] 2 transfer frame Priority VCDUs after egressing from the Europa occultation. 056-19:29 43 DR# 16 16 The EFT lan in - Lost TFs GCF No N42372 the GCF of [58919 & 58920] -> 20:43 BLDG 230 has a 8 RTS VCDUs bad fiber connector. The [58926 & 58927] connector was 8 RTS VCDUs replaced to restore [58929 -> 58932] operability 16 RTS VCDUs and dataflow. [58934 -> 58937] 16 RTS VCDUs [58939 -> 58942] 16 PB VCDUs 057- 01:07 43 DR# 1 0 Unknown - Lost TF U U A01075 [59031] 1 PB & 1 RTS VCDUs 057-17:53 14 1 1 - Unknown - Lost TF U No [59190] 2 PB - TMU drivers VCDUs off 058-14:11 14 DR# 7 2 DSS14 was - Lost TFs W No G01867 unable to go [59455 -> 59461] -> 15:12 to point at 26 PB & 2 scheduled BOT Priority VCDUs. due to high winds. After ***TFs [59460 & winds abated 59461] the station receovered in went to point PPT*** at 14:48z. 059-04:24 43 DR# 2 0 DSS49 went to - Lost TFs W Yes A01082 stow due to [59680 & 59681] -> 04:34 high winds and 8 PB VCDUs the FSC halted. The FSC was rebooted to restore operability. 059-13:50 14 1 1 Unknown - Lost TF U No [59741] 4 PB VCDUs ***Recovered in the PPT*** 060-14:04 14 DR# 3 1 Unknown - Lost TFs U No G01875 [60038 -> 60040] -> 14:45 11 PB & 1 Priority VCDUs ***TF [60040] recovered in PPT*** 060-20:34 49 DR# 1 0 DSS49 to stow - Lost TF W Yes A01086 due to high [60113] 4 PB winds VCDUs 060-21:29 49 DR# 9 0 DSS49 to stow - Lost TFs W Yes A01086 due to high [60137 -> 60142] -> 21:42 winds 23 PB & 1 Priority VCDUs 21:45 - Lost TFs -> 21:49 [60144 & 60145] 8 PB VCDUs 21:52 - Lost TF [60147] 4 PB VCDUs 060-22:01 43 DR# 16 0 Inclement - Lost TFs W No A01088 weather- rain, [60150 -> 60165] -> 22:55 and SNT > 30 K 62 PB & 2 Priority VCDUs 061-01:19 43 DR# 6 0 Inclement - Lost TFs W No A01088 weather- rain, [60208 -> 60213] -> 01:39 and SNT > 30 K 24 PB VCDUs 061-04:16 43 DR# 1 0 Lightning - Lost TF W No A01089 strike [60260] 4 PB disabled the VCDUs Ultra-Cone maser. The maser was reset to restore to operability. 061-17:29 14 1 1 Unknown - Lost TF U No [60364] 4 PB VCDUs 062-02:49 43 1 1 Unknown - Lost TF U No [60535] 4 PB VCDUs 063-19:10 43 DR# 3 3 The GTC was - Lost TFs S No A01095 reset in an [60967 -> 60969] -> 19:24 attempt to 12 PB VCDUs restore 3-12G DGT monitor. The attempt was unsuccessful. Time (GMT) DSS Reference RT Rcvd Events Comments Cause Array TFs Ops Lost from Related? PPT 063-19:51 43 DR# 3 3 The BTD halted - Lost TFs S No A01095 operation and [60978 -> 60980] -> 20:01 needed to be 11 PB & 1 reset after Priority VCDUs the earlier GTC reset to restore operability. 063-21:33 49 DR# 4 0 DSS49 to stow - Lost TFs W Yes A01097 due to high [61019 -> 61024] -> 21:43 winds from 15 PB & 1 063-21:30 to Priority VCDUs 064-01:25 064-20:04 49 DR# 1 0 - DSS49 was - Lost TF A Yes A01099 unable to go [61286] 4 PB to point due VCDUs to unspecified computer problems. - BRC 60-80bps 064-20:55 49 DR# 1 0 DSS49 to stow - Lost TF W Yes A01101 due to high [61299] 4 PB winds from VCDUs 20:53 to EOT 065-10:08 63 DR# 1 1 Unknown - Lost TF U No L00923 [61404] 4 PB VCDUs 066-04:21 43 DR# 14 0 - The Antenna - Lost TFs A Yes A01104 Servo [61657 -> 61670] -> 05:54 Controller at 53 PB & 2 DSS43 failed. Priority VCDUs No restoral prior to EOT at 05:50z. 066-18:09 14 DR# 47 0 DSS14 utilized - Lost TFs PD No N42464 the incorrect [61757 -> 61803] -> 20:35 set of 184 PB & 4 predictions Priority VCDUs for this support; the predictions did not include any BRC's past the BRC to 40bps. 068-05:11 43 1 1 Unknown - Lost TF U U [62264] 3 PB & 1 Priority VCDUs 068-13:23 63 1 1 - Unknown - Lost TF U No [62327] 4 PB - BRC VCDUs 32->20bps missed by incoming DSS14 as well 069-18:44 43 DR# 2 0 - Unknown - Lost TFs SPA No A01113 [62673 & 62674] -> 18:51 - Below range 4 PB, 3 RTS, & 1 Pd/N0 at FSC Priority VCDUs 070-04:38 43 DR# 1 0 - Unknown - Lost TF U Yes A01114 [62859] 4 PB -BRC 60-40bps VCDUs 070-06:18 63 2 0 DSS63 acquired - Lost TF's U No the downlink [62870 & 62871] -> 06:41 after conclusion the scheduled PWS fill 070-08:27 63 DR# 1 1 Unknown - Lost TF U No L00928 [62882] 3 PB & 1 Priority VCDUs 070-19:52 43 DR# 35 0 The FSC - Lost TFs S Yes A01115 halted. The [62986 -> 63020] -> 221:12 station 139 PB & 1 rebooted the Priority VCDUs FSC to restore operability. *FSR tapes requested*** 071-19:35 42 DR# 3 0 The GTC halted - Lost TFs S Yes A01118 and required a [63258 -> 63260] -> 19:52 reboot to 12 PB VCDUs restore to operability. 071-21:28 49 DR# 2 0 Commercial - Lost TFs F Yes A01123 power [63286 & 63287] -> 21:42 interruption 7 PB & 1 to DSS49 Priority VCDUs 071-22:57 42 DR# 1 0 Unknown - Lost TF U Yes A01124 [63299] 3 PB & 1 Priority VCDUs 071-23:52 49 70 1 0 DSS49 swapped - Lost TF F Yes to diesel [63307] 3 PB & 1 power to Priority VCDUs alleviate any further commercial power interruptions Time (GMT) DSS Reference RT Rcvd Events Comments Cause Array TFs Ops Lost from Related? PPT 071-13:55 14 DR# 3 0 -The DGT at - Lost TFs U No G01900 DSS14 was [63410 -> 63412] -> 14:23 declared red 11 PB & 1 at BOT Priority VCDUs (1315z). - The restoral action is unknown at this time. 072-03:15 43 DR# 6 0 - All TFs lost - Lost TFs SPA No A01131 during rate [63600 & 63601, ->05:10 changes. This 63607, 63617& would be 63618, 63626] acceptable considering 4 Priority VCDUs that each rate change occurred during, or shortly after, a burn period. - rate change losses: 80-60bps, 60-40bps, & 40-32bps respectively. 072-11:56 63 DR# 1 0 - Lost rate - Lost TF SPA No L00937 change during [63661] 1 burn period. Priority VCDU - rate change loss: 32-20bps 073-14:14 14 DR# 2 0 - Complex wide - Lost TF [63672 F No G01907 power outage & 63673] 2 -> 14:31 priority VCDUs 073-16:48 14 DR# 2 0 -Unscheduled - Lost TFs F No G01907 2-way mode [63690 & 63691] -> 17:13 change due to 3 Priority VCDUs earlier power outage. 074-12:55 63 1 1 Unknown - Lost TF U No [63948] 4 PB VCDUs 074-17:54 43 DR# 7 0 MEC halted - Lost TF [63982 A Yes A01133 operation. -> 63988] 27 PB -> 18:21 Station went & 1 Priority to computer VCDUs mode for antenna movement. 075-05:45 63 DR# 3 3 The BTD halted - Lost TFs H No L00946 operation and [64188 -> 64190] the station 6 PB, 2 rebooted to Priority, & 1 restore RTS VCDUs operability. 077-21:03 43 DR# 1 0 - Lost during - Lost TF U Yes A01139 the rate [64942] 4 PB change from VCDUs 120 to 80bps. No other obvious activities occurred during that timeframe. - May be prdx related. 078-01:53 43 DR# 1 0 FSR1 timed - Lost TF S Yes A01140 out. No [65027] 4 PB operator VCDUs action was necessary to recover the FSR. 078-06:05 63 DR# 7 0 The antenna - Lost TFs A No L00953 went to brake [65076 -> 65084] -> 07:04 due to "film 24 PB, 2 RTS, & height alarm 2 Priority VCDUs on pad #1". The debris was cleared without maintenance intervention. 078-11:46 63 1 1 Unknown - Lost TF S No [65126] 4 PB VCDUs 078-13:16 14 DR# 1 1 - Unknown - Lost TF U No G01936 [65136] 4 PB - rate change VCDUs 20-32bps 078-16:56 14 DR# 1 1 - Unknown - Lost TF U No G01937 [65164] 4 RTS VCDUs 078-17:30 43 DR# 1 0 FSC carrier - Lost TF S Yes A01142 spectrum [65169] 4 RTS reflected all VCDUs zeros. The station rebooted the FSC to restore operability. 079-18:56 43 1 0 - Unknown - Lost TF U Yes [65509] 4 RTS - DSS49 was VCDUs entered into the array 4 minutes and 23 seconds after the rate change from 80-120bps. - Close out pending Time (GMT) DSS Reference RT Rcvd Events Comments Cause Array TFs Ops Lost from Related? PPT 079-21:30 43 DR# 1 0 - Unknown - Lost TF U Yes A01148 [00036] 3 RTS & - rate change 1 Priority VCDUs 80-120bps 080-12:02 63 DR# 1 1 - Unknown - Lost TF S No L00959 [00234] 4 RTS VCDUs 080-12:19 63 DR# 1 0 - Unknown - Lost TF U No L00959 [00236] 3 RTS & -rate change 1 Priority VCDUs 32-20bps 080-12:46 63 DR# 1 0 - Unknown - Lost TF [00238 U No L00959 & 00239] 7 RTS & - rate change 1 Priority VCDUs 20-32bps 081-18:25 43 DR# 1 1 - Unknown - Lost TF U Yes A01156 [00649] 4 PB - Missed rate VCDUs change 80-120bps 081-19:34 43 DR# 40 40 - The FSC core - Lost TFs S Yes A01155 process died [00679 -> 00718] -> 20:49 at the rate 134 PB, 16 RTS, change & 2 Priority 120-160bps. VCDUs. The FSC was power cycled ***Recovered to restore from FSR tape operability. reprocessing*** - **FSR tapes requested** 081- 21:23 14 DR#G01950 2 0 - DSS14 was - Lost TFs PP Yes scheduled [00734 & 00735] -> 21:28 incorrectly, 8 PB VCDUs they were scheduled past EOT. - The FSC was unable to process the two frames due to predicted vs. actual supported array elements. 082-12:52 63 1 0 - Unknown - Lost TF U No [00959] 4 RTS - last valid VCDUs TF @ 12:44 and EOT at 13:00 - BR= 32bps 082-23:32 43 DR# 2 0 The FSR1 tone - Lost TF [01142 H Yes A01159 rotator halted & 01143] 6 PB & -> 23:36 operation. It 2 RS VCDUs autonomously restored itself. 083-04:35 43 DR# 2 0 The FSC - Lost TF S Yes A01160 halted. The [01245] 3 PB & 1 station was Priority VCDUs unable to restore prior to EOT at 04:55. - **FSR tapes requested** 083-12:16 63 DR# 1 1 Unknown - Lost TF S No L00946 [01296] 3 RTS & 1 Priority VCDUs 083-18:06 43 DR# 1 0 - Unknown - Lost TF U Yes A01162 [01351] 4 PB - Rate change VCDUs 80-120bps 083-19:05 43 DR# 76 75 - A bug within - Lost TFs S Yes A01163 the FSC code [01377 -> 01453] -> 21:26 was isolated 263PB, 36 RTS, & by the DGT 4 Priority Task. A point VCDUs. build fix was installed in the FSC and the frames reprocessed. Kim Simpson has the recovered frames on tape. 083-22:02 43 1 0 - Unknown - Lost TF U Yes [01470] 4 PB VCDUs 084-17:56 43 DR# 1 0 - Unknown - Lost TF U Yes A01165 [01729] 4 PB - rate change VCDUs 80-120bps 084-19:02 43 1 0 - This was a - Lost TF SPA No scheduled fill [01759] 1 PB period during VCDU the rate change of 120-160bps. DSS43 acquired the first TF at 19:04 one VCDU past the scheduled two TFs of fill. Time (GMT) DSS Reference RT Rcvd Events Comments Cause Array TFs Ops Lost from Related? PPT 084-20:43 43 DR# 1 0 - Unknown - Lost TF U Yes A011665 [01818] 4 PB - rate change VCDUs 160-120bps 085-05:15 63 1 1 - Unknown - Lost TF S No [02003] 1 - This frame Priority VCDU was not received during real time, but was in the .fcd PPT file. 085-18:40 43 DR# 1 0 - Unknown - Lost TF U Yes A01167 [02128] 4 PB - Rate change VCDUs 80-120bps 085-19:42 43 1 0 - Rate change - Lost TF SPA No 120-160bps. [02155] 1 PB VCDU - The fill period starts one VCDU time early causing the loss of the first VCDU of Science data coming out of the scheduled fill period. Eight VCDUs of fill are scheduled for a 120-160bps rate change. 086-02:22 49 DR# 3 0 - DSS49 to - Lost TFs W Yes A01168 stow due to [02336 -> 02338] -> 02:32 high winds. 9 PB, 2 RTS, & 1 Priority VCDUs - 120-80bps rate change 087-18:18 43 DR# 2 0 - Unknown - Lost TFs U Yes A01172 [02754 & 02756] -> 18:23 - Rate change 8 PB VCDUs 80-120bps 087-19:06 43 DR# 1 0 - Rate change - Lost TF SPA No A01172 120-160bps [02774] 1 RTS VCDU 087-21:17 43 DR# 3 0 - Thruster - Lost TFs SPA No A01173 flush activity [02844 -> 02846] -> 21:24 1 RTS & 1 Priority VCDUs 087-22:43 43 DR# 2 0 - The MEC - Lost TFs A Yes A01174 inoperative. [02882 & 02883] -> 22:48 The MEC was 1 RTS & 1 reset to Priority VCDUs restore operability. 088-18:46 43 DR# 1 0 - Rate change - Lost TF U Yes A01175 80-120bps [03143] 2 RTS VCDUs 089-07:19 63 2 0 The ACE - Lost TFs UPA No requested the [03333 & 03334] -> 07:33 station 7 RTS & 1 perform a Priority VCDUs resweep of the uplink after noting incorrect parameters in the original uplink sweep. The original uplink sweep did appear to get into the spacecraft. The E6 sequence ended on 089/16:46 TOTAL 453 196 Total Science 10172 Frames: Total Frames 12111 (including Fill): PP - Procedural (Project) Transfer Frames #s lost in brackets [.........] PD - Procedural (DSN) F - Facility problem (e.g. power failure) H - DGT H/W Related/Failure U - Unknown A - Antenna Problem W - Weather (e.g. Parkes stow due to high winds) S - DGT S/W Related; Error or newly understood idiosyncracy/workaround/constraint SA - Spacecraft anomaly and recovery actions UPA - Unscheduled project action SPA - Scheduled Project action PN - Procedural (Nascom) GCF- GCF hardware/software anomaly