 +_____________________________________________________________________
  AUTHOR:                                          DR:              
  VICENTE AGUILAR,JR.    PASS PROGRAM NOTE                109136    
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  ORG/PHONE:          OPS NOTE (X)  USER NOTE ( )  DATE:            
  SSOAS/(281)335-2296      RELEASE NOTE( )                01/13/98  
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  OI/FLIGHT EFFECTIVITY:          USER AFFECTED:                     
  OI-27                           CREW (X)  GROUND (X)  DUMP ONLY ( )
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         MAJOR SOFTWARE AREA:        OPS MODES AFFECTED:             
 SSW ( )  GNC ( )  VU ( )  SM/PL (X) S2, S4                          
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  SOFTWARE SUB-AREA:  SM, TMBU                                        
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  PRINCIPAL FUNCTIONS: S6.20                                          
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  TITLE:  CONTINUOUS FREON COOLANT LOOP COMMANDING WHEN NOISE FILTER  
          EQUALS ZERO                                                 
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  DESCRIPTION:                                                        
                                                                      
  WHEN EITHER FREON COOLANT LOOP 1/2 ACCUMULATOR QUANTITY LOWER LIMIT 
  NOISE FILTERS (V92Q0697C AND V92Q0698C) IS SET TO ZERO, THE FREON   
  LOOP ISOLATE COMMAND IS SENT ON EVERY CYCLE INSTEAD OF ONLY THE     
  FIRST FIVE CYCLES AS STATED IN THE REQUIREMENTS.  AFTER THE FIRST   
  FIVE CYCLES, THE END ISOLATE COMMAND IS ALSO SENT ON EVERY CYCLE.   
  IN ADDITION, WHEN THE NOISE FILTER IS SET TO ZERO, THE ISOLATE      
  COMMAND IS SENT REGARDLESS OF WHETHER THE QUANTITY IS BELOW ITS     
  LIMIT.                                                              
                                                                      
                                                                      
                                                                      
                                                                      
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  USER RESPONSE:                                                      
                                                                      
  A NOISE FILTER VALUE OF ONE CAN BE IMPLEMENTED RESULTING IN THE     
  IMMEDIATE COMMANDING WHEN THE ACCUMULATOR QUANTITY GOES OUT OF      
  LIMITS.  THE COMMAND WILL THEN BE SENT FOR ONLY FIVE CYCLES,        
  THEREFORE AVOIDING THE CONTINUOUS COMMANDING.  IF CONTINUOUS        
  COMMANDING HAS BEGUN, CYCLING THE FREON LOOP SYSTEM TO MANUAL WILL  
  STOP ALL COMMANDING.                                                
                                                                      
  THE NOISE FILTER WOULD THEN HAVE TO BE CHANGED TO A VALUE OTHER     
  THAN ZERO BEFORE THE FCL SYSTEM CAN BE TOGGLED BACK TO AUTOMATIC.   
                                                                      
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 CONCURRENCE:                           APPROVAL:                    
 SSOAS:  JOHN MAGLEY       DATE 02/24/98                             
       ------------------      ---------                             
 ASD:   ERIC C. BINGHAM    DATE 02/24/98                             
     --------------------      --------- DARRELL E. STAMPER 03/06/98 
 PF MGR:  JAMES BAGWELL    DATE 02/24/98------------------- -------- 
        -----------------      --------- CHAIRMAN, SASCB      DATE   
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