 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] SMS:  B27798     ]
 ] M. D. TAGGART      ]    BFS PROGRAM NOTE         ] DR:   109696     ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:            ]
 ] BNA/(562)922-4372  ]      RELEASE NOTE ( )       ]  5-27-97         ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ]  OI-26 AND SUBS               ]  CREW (X)  GROUND ( )  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]           MAJOR SOFTWARE AREA:            ] OPS MODES AFFECTED:     ]
 ]BSL( ) BSS( ) GNC(X) SEQ( ) SM/SP( ) IPL( )]                         ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA:  GUID                                            ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS:  MG038104 / 3.2.3.1.10.3 2ND STAGE GUIDANCE    ]
 ]_____________________________________________________________________]
 ] TITLE:  PASS/BFS SECOND STAGE THROTTLE DIVERGENCE                   ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ] WHEN SSME #1 IS FAILED AND THE COMMANDED PITCH GIMBAL ON SSME #2 OR ]
 ] SSME #3 IS GREATER THAN THE I-LOADED VALUE FOR DYC_GIMB_RELIEF,     ]
 ] THERE MAY EXIST A DIVERGENCE BETWEEN THE COMMANDED THROTTLE VALUES  ]
 ] FOR PASS AND BFS.  THIS DIFFERENCE MAY CAUSE THE MECO TIMES TO      ]
 ] DIFFER SLIGHTLY BETWEEN THE PASS AND BFS.  THERE MAY BE A SITUATION ]
 ] WHEN PASS THROTTLES DOWN AND BFS DOES NOT OR BFS THROTTLES DOWN     ]
 ] BEFORE PASS.  EITHER SITUATION CAN ONLY BE SEEN WHEN BFS IS NOT     ]
 ] ENGAGED.                                                            ]
 ]                                                                     ]
 ] IF BFS IS ENGAGED DURING THE WINDOW OF PASS/BFS DIVERGENT THROTTLE  ]
 ] COMMANDS, THE THROTTLE WILL CHANGE TO THE BFS VALUE.                ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] USER RESPONSE:                                                      ]
 ]                                                                     ]
 ] THERE IS NO ACTION WHICH CAN BE TAKEN BY THE USER.                  ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]BNA:<S> D. CORBIN         DATE 07/14/97]                             ]
 ]    --------------------      ---------]                             ]
 ]ASD:  ERIC C. BINGHAM     DATE 07/22/97]                             ]
 ]    --------------------      ---------] DARRELL E. STAMPER 08/01/97 ]
 ]PF MGR:JOHN W. CRAFT,JR.  DATE 07/29/97]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_____________________________________________________________________]
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