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  AUTHOR:                                          DR:              
  C.E. ORTIZ             PASS PROGRAM NOTE               106681     
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  ORG/PHONE:          OPS NOTE (X)  USER NOTE ( )  DATE:            
  LSIS/282-8551            RELEASE NOTE( )               06/06/94   
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  OI/FLIGHT EFFECTIVITY:          USER AFFECTED:                     
  OI-22 THRU OI-24                CREW (X)  GROUND ( )  DUMP ONLY ( )
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         MAJOR SOFTWARE AREA:        OPS MODES AFFECTED:             
 SSW (X)  GNC ( )  VU ( )  SM/PL ( ) ALL                             
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  SOFTWARE SUB-AREA: GPC, FTS, SC                                     
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  PRINCIPAL FUNCTIONS: SDPS                                           
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  TITLE:                                                              
         POSSIBLE FTS DUE TO STALE SYSTEM CONTROL FLAG                
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  DESCRIPTION:                                                        
                                                                      
  A FAIL-TO-SYNC (FTS) CAUSED BY THE STALENESS OF A SYSTEM CONTROL    
  FLAG MAY BE EXPERIENCED DUE TO THE FOLLOWING:                       
     (1) A GPC FAILS TO JOIN THE COMMON SET (CS) DUE TO               
         FAILURE(S) IN THE CURRENT CS THAT PREVENTS IT FROM PROPERLY  
         RECEIVING THE ICC INITIALIZATION DATA,                       
     (2) THE SAME GPC IS LATER BROUGHT UP AS A PRIMARY GPC WITHOUT    
         FIRST BEING RE-IPLED,                                        
     (3) AND A SECONDARY GPC IS LATER ADDED TO THE CS.                
                                                                      
  THE STALE FLAG CAUSES SECONDARY GPC INITIALIZATION TO BE PERFORMED  
  IN A GPC THAT IS ACTUALLY THE PRIMARY GPC, RESULTING IN A FTS.      
                                                                      
                                                                      
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 USER RESPONSE:                                                       
                                                                      
 THE USER MUST RE-IPL THIS GPC PRIOR TO ITS USE TO ENSURE PROPER      
 INITIALIZATION OF THE STALE SYSTEM CONTROL FLAG.                     
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
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 CONCURRENCE:                           APPROVAL:                    
 LSIS:  JEAN L. ZOPHY      DATE 06/21/94                             
      -------------------      ---------                             
 FDSD:ELIZABETH A. FOUNTAINDATE 06/21/94                             
      ---------------------    --------- DARRELL E. STAMPER 06/21/94 
 PF MGR: KAYLENE F. KINDT  DATE 06/21/94------------------- -------- 
        -----------------      --------- CHAIRMAN, SASCB      DATE   
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