 +_____________________________________________________________________
  AUTHOR:                  RECONFIGURATION         DR: 100771       
  S. SCIMEMI              REQUIREMENT WAIVER       REV A            
 ____________________                             __________________
  ORG/PHONE:          WAIVER ONLY ( )              DATE: 8/3/88     
  DP2/X34397          WAIVER AND NOTE (X)          REV DATE: 8/30/88
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  OI/FLIGHT EFFECTIVITY:          USER AFFECTED:                     
  OI8A/OI8B/OI8C                  CREW (X)  GROUND ( )  DUMP ONLY ( )
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  MAJOR SOFTWARE AREA:    PASS(X) BFS( ) OPS MODES AFFECTED:         
  SSME**( ) DEU**( ) T&G( ) DFL/FPL**( ) OPS 2                       
  TFL**( ) TCS**( ) I-LOAD( ) LEVEL C(X)                             
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  SOFTWARE SUB-AREA: SM DISPLAY PROCESSING AND FDA                    
 _____________________________________________________________________
  PRINCIPAL FUNCTIONS: SYSTEM MANAGEMENT, SM ENVIRONMENTAL DISPLAY    
                       SPEC 66     ( S5.2.3 )                         
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  TITLE: NO DOWN ARROW DISPLAYED FOR CABIN PRESSURE(SPEC 66)          
                                                                      
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  REQUIREMENT TO BE WAIVED: ON SPEC 66, WHEN CLASS 2 FDA IS           
  ANNUNCIATED FOR CABIN PRESSURE (AND PARTIAL PRESSURE OF OXYGEN),    
  NO DOWN ARROW IS DISPLAYED IN THE PSI FIELD. WHEN CLASS 3 FDA IS    
  ANNUNCIATED, THE DOWN ARROW APPEARS. THIS IS A RESULT OF THE CLASS  
  2 FDA LIMITS BEING INSIDE THE CLASS 3 FDA LIMITS. STAR WILL NOT     
  ALLOW A CLASS 2 FDA TO DRIVE THE PSI ON CONCURRENT LIMIT SENSED     
  PARAMETERS. THE REQUIREMENT FOR UP OR DOWN ARROW TO BE DISPLAYED    
  FOR CLASS 2 FDA ON CABIN PRESSURE AND PPO2 SHOULD BE WAIVED.        
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
 _____________________________________________________________________
 REQUIREMENTS DOC: JSC-19590          PAGE AND PARAGRAPH NO:         
                                                                     
 ____________________________________________________________________
 ALTERNATE REQUIREMENT BEING MET, IF APPLICABLE:                      
 CLASS 3 FDA LIMITS DO DRIVE PSI FOR CONCURRENT LIMIT SENSED          
 PARAMETERS.                                                          
                                                                      
                                                                      
 _____________________________________________________________________
 CONCURRENCE:                           APPROVAL:                    
 RSOC: GARY WAIT           DATE 9/22/88                              
      -------------------      ---------                             
 MOD: GEORGE BULL          DATE 9/22/88                              
     --------------------      --------- JACK G.BOYKIN       9/26/88 
 SW MGR: C. L. STOUGH      DATE 9/22/88 ------------------- -------- 
        -----------------      --------- CHAIRMAN, SASCB      DATE   
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