 +_____________________________________________________________________
  AUTHOR:                                          SMS:  B08324     
  D.G. YEE               BFS PROGRAM NOTE                           
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  ORG/PHONE:          OPS NOTE ( )  USER NOTE (X)  DATE:            
  RI 2820440  X-1614       RELEASE NOTE ( )        03/15/83         
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  OI/FLIGHT EFFECTIVITY:          USER AFFECTED:                     
       STS-6 AND SUBS             CREW (X)  GROUND ( )  DUMP ONLY ( )
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            MAJOR SOFTWARE AREA:             OPS MODES AFFECTED:     
 BSL( ) BSS(X) GNC( ) SEQ( ) SM/SP( ) IPL( ) 1, 3, 6                 
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  SOFTWARE SUB-AREA:  GAX, DISPLAY                                    
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  PRINCIPAL FUNCTIONS: MG038101/3.4 - 3.4.3                           
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  TITLE:  FCS CH FAIL ACTUATOR DISCRETES                              
                                                                      
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  DESCRIPTION:                                                        
                                                                      
   FCH CH PROCESSING IN GAX DOES NOT TREAT EACH DISCRETE OF           
   THE PARENT WORD AS A SEPARATE PARAMETER.  A DOWNARROW              
   AND ANNUNCIATION OCCURS IF THE FIRST EIGHT BITS (BITS              
   0-7) OF THE RESPECTIVE TWO PARENT WORDS, PER FCS                   
   CHANNEL, INDICATE AN ACTUATOR FAIL.                                
                                                                      
   REFERENCE:  DANDC FSSR STS 81-0020B, B4.11-18                      
                                                                      
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 USER RESPONSE:                                                       
                                                                      
   FCS CH PROCESSING AND ANNUNCIATION IS DONE WITH RESPECT            
   TO THE PARENT WORD AND NOT EACH DISCRETE BIT.  AS A                
   RESULT, IF MULTIPLE ACTUATOR FAILURES OCCUR, ONLY ONE              
   ERROR MESSAGE WILL APPEAR PER FCS CHANNEL.                         
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
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 CONCURRENCE:                           APPROVAL:                    
 RI:<S>W.P. SELFRIDGE      DATE                                      
  --------------------         ---------                             
 SSD: SAM ANKNEY           DATE 08/02/88                             
  --------------------         --------- JACK G BOYKIN      08/17/88 
 PF MGR: J VERNON          DATE 07/29/88------------------- -------- 
        -----------------      --------- CHAIRMAN, SASCB      DATE   
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