 +_____________________________________________________________________
  AUTHOR:                                          DR:              
  TREVOR TIDWELL         PASS PROGRAM NOTE               109182     
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  ORG/PHONE:          OPS NOTE (X)  USER NOTE ( )  DATE:            
  SSOAS/(281)335-2214      RELEASE NOTE( )               02/03/98   
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  OI/FLIGHT EFFECTIVITY:          USER AFFECTED:                     
   OI-26B, OI-27                  CREW ( )  GROUND (X)  DUMP ONLY ( )
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         MAJOR SOFTWARE AREA:        OPS MODES AFFECTED:             
 SSW ( )  GNC (X)  VU ( )  SM/PL ( )  G1, G2, G3, G6, G8             
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  SOFTWARE SUB-AREA:  GNC, DOWNLIST, NAVAID                           
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  PRINCIPAL FUNCTIONS:  4.21                                          
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  TITLE:                                                              
    TIME SINCE LAST GPS SELECTED STATE NOT ASSIGNED HOMOGENEOUSLY     
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  DESCRIPTION:                                                        
                                                                      
   THE GPS PARAMETER DT_GPS_OFF_MIN (MSID V94W0981C) REPRESENTS THE   
   TIME IN MINUTES SINCE THE LAST GPS SELECTED STATE AND IS A MEMBER  
   OF TIME HOMOGENEOUS SET 9.  HENCE, THE POSSIBILITY EXISTS FOR      
   DOWNLIST TO PROCESS THE DATA AT SUCH A TIME WHEREBY DT_GPS_OFF_MIN 
   IS NOT TIME HOMOGENEOUS WITH THE REST OF SET 9.                    
                                                                      
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 USER RESPONSE:                                                       
                                                                      
   NONE. USER SHOULD BE AWARE THAT THIS PARAMETER MAY NOT BE TIME     
   HOMOGENEOUS WITH THE REST OF THE SET.  IT MAY BE TIME INCONSISTENT 
   BY 0.064 MINUTES (3.84 SECONDS), HOWEVER THIS OCCURRENCE IS OF     
   EXTREMELY LOW PROBABILITY AND WILL BE CORRECTED ON THE NEXT        
   DOWNLIST PASS.                                                     
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
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 CONCURRENCE:                           APPROVAL:                    
 SSOAS:   JOHN MAGLEY      DATE 03/10/98                             
       ------------------      ---------                             
 ASD:   ERIC C. BINGHAM    DATE 03/12/98                             
       ------------------      --------- DARRELL E. STAMPER 03/12/98 
 PF MGR:  M. N. MONTEZ     DATE 03/10/98------------------- -------- 
       ------------------      --------- CHAIRMAN, SASCB      DATE   
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