August 1995

1  August         KEP GAS NG-direct - 213.00:00 SCET.
                  Control Electronics switch off due to erroneous command
                  transmission - 213.02:18 SCET.
                  Recovery from CE switch off:
                   Conscan disable - 213.04:07 SCET.
                   CE-1 on - 213 04:11 SCET.
                   Thruster/catbed select: lower axial 1/LA - 213.04:58 SCET.
                   Latching valve 1 flip flop on - 213.06:06 SCET.
                   Conscan enable - 213.06:48 SCET.
                   Reload AOCE1 - 213.06:48 SCET.

2  August         Nutation damping operations.
214.16:05-16:30   25 minutes unrecoverable outage due to TGC failure, DSS 12.
                  DR J7851 & J7853.

3  August         KEP GAS UV-stars, NG-mode, Pt.1 - 215.19:00 SCET.

4  August         Nutation damping operations.
                  GRU2 heater 1 off - 216.00:49 SCET.
                  GRU2 heater 2 on  - 216.00:51 SCET.

5  August         KEP GAS full sky scan, NG-mode - 217.02:00 SCET.
                  GLG heater 3 switch on - 217.17:19 SCET.

6  August         Nutation damping operations.

7  August         GCF - 1hr 41m patchy data due to intermittent GCF errors.
                  219.20:19 to 22:00 SCET. DR J7908.
                  KEP IFC - 219.21:20 SCET.

8  August         KEP GAS UV-stars, NG-mode, Pt.2- 220.00:00 SCET.
220.15:50-16:10   DSS15 - THE SG FAILED AT 16:01ERT WITH THE GMC INDICATING A
                  FAILED INTERFACE. WARMLOADS AND A COLDLOAD WERE PERFORMED ON
                  THE SG WITH NO SUCCESS.  SWAPPED TO THE SNG (AS THE SG) AND 
                  ALL DATA ON LINE AT 1638ERT.  ALL DATA RECOVERABLE FROM
                  THE CDR. DR J7909.

9  August         HED calibration - 221.14:00 SCET.

10 August         Nutation damping operations.

11 August         KEP GAS full sky scan, UV-mode - 223.04:00 SCET.

12 August         Nutation damping operations.

13 August         KEP GAS UV-star(Spica), UV-mode, NG-mode - 225.02:00 SCET.

14 August         KEP GAS NG-direct - 226.16:00 SCET.
                  GLG heater 1+3 switch on - 226.21:19 SCET.
                  KEP IFC - 226.21:29 SCET.

15 August         SIM HET calibration - 227.14:00 SCET.
         
16 August         Nutation damping operations.
228.22:01         SPC-10 declared nonoperatinal because of an overheating 
                  transformer.
228.22:20-03:55   DSS-12 on generator, uplink only.
229.03:55-07:25   No coverage.
229.07:25-21:00   DSS-61 tracking pass.
                  SPC-10: 11h 7m unrecoverable data because of transformer
                  failure, 228.20:14:33 to 229.07:21:46 SCET. The following 
                  description is from the DSN ops report:
                                                                                


DSS12/ULYS      229/1000Z       DR J8040        JFV     RTC/MAINTENANCE
DSS15/ULYS                      (CLASS 4)
DSS14/GLLO                      
DSS16/RSAT       AT 2000Z SPC10 WAS POWERED DOWN DUE TO AN OVERHEATING   
DSS24/VGR-1      TRANSFORMER IN THE POWER HOUSE. DSS12 CONTINUED OPERATING THE
DSS16/ERBS       ANTENNA MANUALLY CONTINUED TO PROVIDE AN U/L ONLY. THIS 
DSS17/ROST       SUPPORT WAS EXTENDED TO 0355Z.  POWER WAS RESTORED DOY 
DSS14/PN-10      229/1000Z. DSS14/PN-10 & DSS15/ULYS WERE DELAYED FROM THE 
                 ORIGINAL BOT. ALL OTHER REFERENCED SUPPORTS WERE DELETED. 
                 MAINTENANCE FABRICATED TRANSFORMER CONNECTORS TO RESTORE.



17 Aug            
229.18:50-19:05   DSS-15. SCP2 failure, 15 minutes realtime data loss. 
                  DR J8044.

                  EPD 10W switch off:
                   Disable Spin Fail Detect       - 229.20:50 SCET.
                   Dump PT & BT.
                   Deschedule REC.
                   Deschedule WDQ.
                   Arm watchdog.
                   Switch off 10W EPD             - 229.21:39 SCET.
                   Update watchdog.

229.22:22-22:42   Earthquake (5.2) centred at Ridgecrest caused interruption
SCET              of track at Goldstone. 20m data loss. DR J8048.

                  KEP GAS NG direct, CR 331 dated 14 August 95 - 229.23:00 SCET.

                   Disarm watchdog.
                   Schedule WDQ.
                   Schedule REC.
                   Enable SFD                     - 229.23:52 SCET.
                   Dump time tag buffer.

18 August         Nutation damping operations.

19 August         Nutation damping operations.

20 August         Nutation damping operations.
                  
21 August         Conscan deadband set to wide (0.23 degrees) - 233.15:51 SCET.
                  GLG heaters 1+2+3 on - 233.21:11 SCET.
                  KEP IFC - 233.21:00 SCET.

22 August         Nutation damping operations.
                  BAM-I aperture to motor position 3 - 234.21:30 SCET.

234.00:22-00:43   DSS-15 comms problems cause 21 minutes realtime data loss. 
SCET              DR J7930.   

23 August         HED calibration - 235.14:00 SCET.

24 August         GRU routine noise test - 236.16:00 SCET.

25 August         Nutation damping operations.

26 August         Nutation damping operations.

27 August         Nutation damping operations.

28 August         Sun sensor gain switching operation (low to high).
                   Disable Spin Fail Detect - 240.19:53 SCET.
                   BAM-E to internal sun pulse - 240.19:55 SCET.
                   Sun sensor gain low to high - 240.20:48 SCET.
                   BAM-E to normal sun pulse - 240.20:50 SCET.
                   Enable SFD - 240.21:45 SCET.

                  KEP IFC - 240.22:11 SCET.
                  
29 August         Conscan off at 241.16:05 SCET.  End of nutation damping
                  operations.

241.13:10 - 13:30 20mins of degraded data at DSS15 due to SCP problems.
SCET

30 August         KEP GAS NG-direct, CR #333 - 242.12:00 SCET.
                  Earth pointing manoeuvre - 242.18:00 SCET.
                  Switch to DSU 2 - 242.20:01 SCET.

31 August         Routine operations.