GE 2/18/99 E19 Science Data Losses 030-02:46 - 049-23:55; Lost TFs in brackets[.....] Changes in Bold Time (GMT) DSS Reference RT Rcvd Events Comments Cause Pass TFs # Lost from PPT 031-10:23 43 DR# A3365 3 - The entire - Lost F 3401 experienced a TFs -> 10:57 power outage [40597 -> causing the loss 40599] 12 of the last three RS VCDUs TFs from this support. 031-11:05 63 DR# L2949 4 - The antenna - Lost A 3401 main servo pumps TFs -> 11:31 were inoperative [40600 -> for the first 30 40603] 15 mins of this RTS & 1 support. Priority VCDUs 031-13:11 63 DR# L2949 1 - Late 2-way mode - Lost TF A 3401 change due to [40616] 4 previously RTS VCDUs mentioned anomaly. 031-17:37 63 1 - Unknown - Lost TF U 3401 [40657] 2 RTS VCDUs The s/c entered safing approximately 4 hours after closest approach and the recovery was not completed until 2/10/99. 042-08:06 43 1 - Unknown - Lost TF U 3412 [40807] 1 Priority VCDU 042-09:42 43 DR# A3408 1 - After TWNC was - Lost TF H 3412 turned off the [40814] 1 FSR's did not Priority recover. VCDU 042-10:50 63 2 - Unknown - Lost U 3412 TFs -> 11:31 [40820 & 40821] 1 RTS & 1 Priority VCDUs 042-16:59 63 5 - The DGT tlm - Lost UPA 3412 predicts were TFs -> 20:10 incorrect and the [40846, station had to 40853 & make manual 40854, changes in order 40859 & to lock tlm 40860] 15 during the stated PB & 2 time period. Priority VCDUs 043-14:31 63 4 - The FCDs were - Lost U 3413 unable to TFs -> 14:59 successful decode [41072 -> at the 41075] 15 Reed-Solomon PB & 1 level the four Priority mentioned TFs - VCDUs reason unknown. 043-16:35 63 1 - Unknown - Lost TF U 3413 [41090] 4 PB VCDUs 043-19:12 14 1 - The station was - Lost TF U 3414 late in locking [41115] 1 the d/l signal Priority after the 1-way VCDUs mode change. 044-17:06 14 1 - Rate change - Lost TF S 3415 20-32bps [41372] 2 -> 17:15 PB & 1 Priority VCDUs 044-23:21 14 3 - Unknown, The - Lost U 3415 FCD was unable to TFs -> 23:35 successfully [41445 & decode these TFs 41446, 01:20 at the 41469] 11 Reed-Solomon PB & 1 level. Priority VCDUs 045-16:20 63 1 - Unknown, The - Lost TF U 3415 FCD was unable to [41569] 3 successfully PB & 1 decode this TF at Priorty the Reed-Solomon VCDUs level. 045-18:03 63 2 - Rate change - Lost S 3415 40-32bps TFs 19:32 [41584 & - Rate change 41594] 8 32-20bps PB VCDUs Time (GMT) DSS Reference RT Rcvd Events Comments Cause Pass TFs # Lost from PPT 045-23:14 14 1 - Rate change - Lost TF S 3416 60-40bps [41641] 4 PB VCDUs 046-09:45 63 2 - Rate change - Lost S 3416 20-32bps TFs -> 10:11 [41768 & 41769] 5 PB, 2 RTS, & 1 Priority VCDUs 046-11:02 63 DR# L3009 3 - The uplink - Lost U 3416 sweep did not TFs -> 13:28 capture the s/c [41776, receiver on the 41795 & first attempt. 41796] 10 The second PB & 1 attempt was Priority successful. VCDUs 046-12:43 63 DR# L3013 29 - The SNR's were - Lost U 3416 occasionally TFs -> 17:23 below the [41790 & threshold for 41791, successful 41799 & decoding during 41800, the stated times. 41802, 41813, 41821 -> 41830, 41832 -> 41846] 122 PB & 9 Priority VCDUs 047-09:25 43 1 - Rate change - Lost TF S 3417 40-32bps [42015] 4 PB VCDUs 047-12:39 63 4 - The TFs were - Lost I 3417 not on the TDS, TFs -> 13:06 but were [42041 -> transmitted from 42044] 15 the GTC. RTS BTD & 1 Priority VCDUs 047-23:11 43 1 - Rate change - Lost TF S 3418 60-40bps [42142] 4 PB VCDUs 047-23:25 43 DR# A3434 140 - The GTC-GIF - Lost U 3418 failed and was TFs -> unable to [42145 -> 048/09:45 restored--reason 42183] unknown. 542 PB & 18 Priority VCDUs 049-13:55 63 1 - The station was - Lost TF U 3419 late in acquiring [42644] 1 the downlink Priority signal. VCDUs 049-15:49 63 DR# L3026 4 - The station - Lost PD 3419 sweep the s/c TFs -> 18:07 receiver with the [42657 & incorrect tuning 42658, parameters. 42678 & 42679] 14 PB VCDUs TOTAL 217 0 Total Science 2023.5 Frames: Total Frames 2494 (including Fill): PP - Procedural (Project) Transfer Frames #s lost in brackets [.........] PD - Procedural (DSN) H - H/W Related/Failure A - Antenna Problem S - S/W Related UPA - Unscheduled project action SPA - Scheduled Project activity GCF- GCF hardware/software anomaly F - Facility problem (e.g. power failure) U - Unknown W - Weather (e.g. Parkes stow due to high winds) I - Internal JPL AMMOS anomaly JN - Jupiter Hot Body Noise SS - Solar Scintillation SE - SPACECRAFT EMERGENCY