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                             SPACE SHUTTLE STATUS REPORT
                             Kennedy Space Center, Florida

                             Monday, January 11, 1993


          George H. Diller
          407/867-2468

          Vehicle: OV-105/Endeavour   Mission Number: STS-54
          Location: Launch Pad 39-B
          Primary Payload: TDRS-F/IUS-13 + Diffuse X-ray Spectrometer (DXS)
          Launch Timeframe: January 13  8:52 a.m. EST
          Mission Duration: 5 Days 23 Hours 33 Minutes
          Inclination: 28.45 degrees   Crew Size: 5
          Nominal Landing: KSC  Jan. 19  8:24 a.m. EST


          IN WORK TODAY:

          - Launch countdown operations in Firing Room 3
          - cryogenic reactant loading operations until 4:30 p.m.
          - main engine final preparations
          - IUS battery voltage checks
          - communications system activation
          - inertial measurement unit checkout
          - potable water microbial sample
          - commander and pilot Shuttle Training Aircraft flights
          - astronaut fit checks of launch and entry suits

          WORK COMPLETED:

          - astronaut arrival at KSC 3:30 p.m. Sunday
          - payload bay door closure at 7:10 p.m. on Sunday night
          - navigation aids activation
          - pad washdown and initial debris inspections
          - mass memory unit checkout


          STS-54 WORK SCHEDULED:

          - demate orbiter mid-body umbilical tonight
          - install flight crew mission items and personal effects tonight
          - closeout tail service masts on Tuesday
          - retract rotating service structure 11 a.m. Tuesday
          - final launch pad debris insepctions Tuesday
          - payload mid-deck late stowage including rodents Tuesday
          - IUS guidance system calibration Tuesday night
          - activate inertial measurement units Tuesday night
          - check main engine steering (gimbal check) Tuesday night
          - begin external tank fueling loading 12:32 a.m. Wednesday


          ISSUES & CONCERNS: None


          SPECIAL TOPICS: Launch Weather Forecast

          At the opening of the launch window at 8:52 a.m. on Wednesday
          conditions are forecast to be:

          Temperature: 67 degrees
          Dewpoint: 61 degrees
          Humidity: 80%
          Wind:  SSW-8 knots
          Visibility: 7+ miles

          Significant clouds or weather: Chance of showers and cloud
          ceilings below 8,000 feet.

          Chance of acceptable launch weather conditions: 70%