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                       GALILEO DAILY REPORT
                         11 OCTOBER 1989
 
SPECIAL ANNOUNCEMENT:  17 October at 12:57 p.m. EDT is the new
launch date for Galileo.
 
                             General
 
Spacecraft
 
     The spacecraft is still in its launch ready state and is
being monitored constantly both at KSC and at Pasadena.
     A PF/R was opened, analyzed, and dispositioned on the
attachment of the PRDs (Pressure Release Device) to the RTGs.
 
LCET
 
     LCETs #1 and #2 are both being manned around the clock when
spacecraft telemetry analysis is in process.
 
                             Details
 
Spacecraft
 
     The spacecraft continues to operate satisfactorily from
power supplied by the RTGs.  However, temperature control
engineering has requested that the orbiter air conditioning to
the spacecraft be raised from 52 deg F to 58 deg F.  The basis
of this request was the RPM temperature which is at its lower
acceptable limit as specified in the launch commit criteria.
The orbiter temperature was raised as per JPL's request on the
evening of 10 October.  Appropriate paper is in process that
will allow the inlet temperature to be varied from
48 deg F to 60 deg F.  This in turn will allow for any future
adjustment as a normal operation of the prelaunch activities.
     As reported on 9 October, during the mating
of the PRD (Pressure Release Device) to the RTG two additional
washers were installed on each of the four screws used to attach
the PRDs to each of the RTGs.  Questions were raised on the
action taken, that is, the installation of the washers.  PF/R
54340 was opened to document the concern expressed by General
Electric.  Subsequent analysis was made on the overall
incident.  The primary points were: 1) that during the insertion
of the screws the engagement of the screws into the insert
locking mechanism was misinterpreted as the screw bottoming out,
2) two washers were added to reduce the gap which in turn
reduced the amount of screw engagement in the insert locking
mechanism, 3) both JPL and GE engineers agreed that the last one
turn into the locking mechanism was required, 4) the JPL
technician, that did the hands-on work, and the engineer, that
witnessed the work, agreed that two screw turns into the locking
element were achieved, 5) that there would be no impact to the
mission if one screw backed out.  Additional analysis was done
at JPL, and after review of the total picture, the Project
Manager declared that no further action was necessary; in short,
that the attachment of the PRDs to the RTGs was satisfactory.
 
               Schedule Discussion and Assessment
 
     It was announced this afternoon that the new launch date is
17 October at 12:57 p.m. EDT.  The count will be resumed on
Monday, 16 October at L-19 hours at 5:57 p.m. EDT.  Shortly
after the countdown is picked up the IUS is scheduled to be
powered for its final prelaunch conditioning and checks.
 

             Ron Baalke                        (818) 541-2341
             Jet Propulsion Lab  M/S 301-355
             4800 Oak Grove Dr.
             Pasadena, CA 91109