 +_____________________________________________________________________
  AUTHOR:                                          SMS:  B00955A    
  G.T. NOZAKI            BFS PROGRAM NOTE                           
 ____________________                             __________________
  ORG/PHONE:          OPS NOTE ( )  USER NOTE (X)  DATE: 04/03/80   
  380/FB37/4480            RELEASE NOTE ( )        REV:  09/29/89   
 ___________________________________________________________________
  OI/FLIGHT EFFECTIVITY:          USER AFFECTED:                     
     STS-1 & SUBS                 CREW (X)  GROUND ( )  DUMP ONLY ( )
 ____________________________________________________________________
            MAJOR SOFTWARE AREA:             OPS MODES AFFECTED:     
 BSL( ) BSS( ) GNC(X) SEQ( ) SM/SP( ) IPL( )  1, 3                   
 _____________________________________________________________________
  SOFTWARE SUB-AREA:  UI, FCS, ASCENT, OMS, KEYBOARD                  
 _____________________________________________________________________
  PRINCIPAL FUNCTIONS: MG038106/3.2.5.5                               
 _____________________________________________________________________
  TITLE:  ONE OMS TRIM ANGLES DURING INSERTION/DEORBIT                
                                                                      
 _____________________________________________________________________
  DESCRIPTION:                                                        
                                                                      
   THE PITCH AND YAW TRIM VALUES FOR A SINGLE-ENGINE OMS BURN MUST BE 
   ENTERED MANUALLY PRIOR TO THE BURN SINCE THE TRANSDAP ONLY INITIAL-
   IZES THE TWO-ENGINE TRIMS. EXECUTING A SINGLE-ENGINE BURN WITH TWO-!
   ENGINE TRIMS WILL INTRODUCE YAW ERRORS AND INCREASE FUEL CONSUMPT- 
   ION DURING THE BURN.                                               
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
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 USER RESPONSE:                                                       
                                                                      
   THE USER SHOULD BE AWARE THAT WHEN A ONE OMS ENGINE BURN IS        
   PRE-SELECTED PRIOR TO BURN, WHETHER IN PFS OR BFS, THE             
   ONE OMS ENGINE PITCH AND YAW TRIM ANGLES MUST BE                   
   MANUALLY INSERTED.                                                 
                                                                      
 _____________________________________________________________________
 CONCURRENCE:                           APPROVAL:                    
 RI:<S> C. PURTELL         DATE 11/16/89                             
    ------------------         ---------                             
 SSD: W.R. PRUETT          DATE 11/17/89                             
     -----------------         ---------M.C. GREMILLION     12/07/89 
 PF MGR:E.T. KUBIAK        DATE 11/20/89------------------- -------- 
        -----------------      --------- CHAIRMAN, SASCB      DATE   
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