 +_____________________________________________________________________
  AUTHOR:                                          DR:              
  HIRAM THOMPSON         PASS PROGRAM NOTE                108075    
 ____________________                             __________________
  ORG/PHONE: USA/PASS OPS NOTE (X)  USER NOTE ( )  DATE:   03/06/98 
  (281) 282-4168           RELEASE NOTE( )         REV C:  09/03/98 
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  OI/FLIGHT EFFECTIVITY:          USER AFFECTED:                     
  OI-25 THRU OI-26B               CREW (X)  GROUND (X)  DUMP ONLY () 
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         MAJOR SOFTWARE AREA:        OPS MODES AFFECTED:             
 SSW (X)  GNC (X)  VU ( )  SM/PL (X) G1, G2, G3, G6, S2, S4          
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  SOFTWARE SUB-AREA: TRANSITIONS                                      
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  PRINCIPAL FUNCTIONS: SACH, SDEU, SULK, OPSC                         
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  TITLE:                                                              
         ITEM ENTRIES REJECTED ON THE OPS MODE PAGE                   
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  DESCRIPTION:                                                        
                                                                      
  IF A NEW SPEC IS REQUESTED WITHIN APPROXIMATELY ONE SECOND AFTER A  
  MAJOR MODE TRANSITION IS INITIATED, ITEM ENTRIES AND THE SINGLE     
  EXEC KEY ENTRY ON THE OPS PAGE WILL BE REJECTED WITH ILLEGAL ENTRY  
  FOR THE DURATION OF THE MAJOR MODE.                                 
                                                                      
  THIS APPLIES TO MANUAL AND AUTOMATIC MAJOR MODE TRANSITIONS, AND    
  APPLIES TO ITEMS ENTERED FROM A KEYBOARD OR UPLINKED VIA DEU        
  EQUIVALENT.                                                         
                                                                      
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 USER RESPONSE:                                                       
                                                                      
  DO NOT REQUEST A NEW SPEC DURING A MAJOR MODE TRANSITION.  IF       
  THE PROBLEM OCCURS, A TRANSITION, WHEN POSSIBLE, TO ANOTHER MAJOR   
  MODE (FORWARD OR BACKWARD) CLEARS THE ITEM ENTRY LOCKOUT.           
                                                                      
  IF THE PROBLEM OCCURS DURING THE MM102 TO MM103 TRANSITION, THE     
  CREW WILL NOT BE ABLE TO SELECT A CONTINGENCY ABORT SHOULD ONE BE   
  REQUIRED AND COULD RESULT IN LOSS OF CREW AND VEHICLE.              
                                                                      
  IF THE PROBLEM OCCURS DURING THE MM103 TO MM104 TRANSITION, AND IF  
  OMS 1 IS REQUIRED, OMS 1 RETARGETING WILL BE NECESSARY DUE TO THE   
  LOSS OF THE SINGLE EXEC KEY.  THIS MAY RESULT IN A DELAY IN OMS 1,  
  RESULTING IN POSSIBLE LOSS OF MISSION OBJECTIVES AND UNTARGETED     
  RE-ENTRY.                                                           
 _____________________________________________________________________
 CONCURRENCE:                           APPROVAL:                    
 USA/PASS: JOHN MAGLEY     DATE 10/06/98                             
         ----------------      ---------                             
 ASD:     ERIC C. BINGHAM  DATE 10/06/98                             
         ----------------      --------- DARRELL E. STAMPER 10/07/98 
 PF MGR: KAYLENE F. KINDT  DATE 10/06/98------------------- -------- 
         ----------------      --------- CHAIRMAN, SASCB      DATE   
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