HUBBLE SPACE TELESCOPE

       DAILY REPORT #2519

PERIOD COVERED:  0000Z (UTC) 12/13/99 - 0000Z (UTC) 12/14/99

Daily Status Report as of 348/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

Since HST remains in Zero Gyro Sun Point (ZGSP), no science observations 
were performed.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:

                                         No activity

    2.2 FHST Updates:

                                         No activity

    2.3 Operations Notes:

        The HST continues in ZGSP.

        Per an operations request, CCC 5 K2 was set to level 4 at 347/1518Z.

        The time-based recharge ratio charge/discharge buffers were reset 
at 347/1522Z as directed by Operations Note #661.

        Operations Note #686 was utilized to adjust the CCC K5 V/T level at 
347/1532Z.

        A recycle of the CCS "A", "B", and "G" strings was requested in 
preparation for Servicing Mission 3A was requested.  It was noticed that 
the FEP and the backbone were receiving data but the NTs were not.  HSTAR 
7402 was written.  Another recycle of all three strings was successfully 
accomplished at 347/2000Z.

        A TTR was written for T-1 line dropouts at 348/0841Z.  The problem 
was corrected by a line switch.  The resultant missing data will be 
recovered by a requested line outage recorder playback.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Servicing Mission 3A, currently scheduled for December 16, 1999.
/CAW