NASA Photo ID: S90-47899           File Name: 10063924.jpg
  Film Type: 120mm                   Date Taken: 09/11/90
  Title: Technicians test OV-102's aft fuselage LRU hydrogen recirculation pump
  Description:
  Donald C. Buckner, a Lockheed mechanical lead technician, installs an aft 
  fuselage line replaceable unit (LRU) liquid hydrogen recirculation pump
  from  Columbia, Orbiter Vehicle (OV) 102 into JSC's Thermochemical Test
  Area (TTA)  Support Laboratory Bldg 350 test stand.  Technicians ran the
  pump package  through the battery of leak tests. Preliminary indications
  showed only minor,  acceptable leakage from the package and Kennedy Space
  Center (KSC)  technicians have replaced a crushed seal on the prevalve of
  the main  propulsion system they believe may have caused the STS-35
  hydrogen leak.   In  addition to Buckner, (left to right) Larry Kilbourn, a
  Rockwell Service  Center lead mechanical technician from Cape Canaveral,
  and John Dickerson, a  quality inspector with EBASCO Services, also
  monitored the test at JSC. Photo taken by JSC photographer Benny Benavides.          
  
  Subject terms:
  COLUMBIA (ORBITER)                      
  LIQUID HYDROGEN                         
  PERFORMANCE TESTS                       
  PUMPS                                   
  RECIRCULATIVE FLUID FLOW                
  SPACE SHUTTLE MAIN ENGINE               
  STS-35                                  
  

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