 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] DR:              ]
 ]  DAVID WHITE       ]    PASS PROGRAM NOTE        ]       107713     ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE (X)  USER NOTE ( ) ] DATE:  10/11/94  ]
 ]  LSIS/282-7826     ]      RELEASE NOTE( )        ] REV B: 12/06/94  ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ] OI-23, STS-71, STS-70, STS-69 ]  CREW (X)  GROUND (X)  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]        MAJOR SOFTWARE AREA:       ] OPS MODES AFFECTED:             ]
 ]SSW ( )  GNC (X)  VU ( )  SM/PL ( )]   G1, G6                        ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA:  SEQ                                             ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS:  4.116                                         ]
 ]_____________________________________________________________________]
 ] TITLE:                                                              ]
 ]         NO ET DOOR CLOSURE IN MM602                                 ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ]      WHEN AN RTLS ABORT IS REQUESTED AFTER ET SEP IS COMMANDED IN   ]
 ] OPS 1, THE ET UMBILICAL DOORS ARE NOT CLOSED IN MAJOR MODE 602, AS  ]
 ] REQUIRED.  A TRANSITION TO MM602 FROM MM104 IS PERFORMED FOLLOWING  ]
 ] THE LOSS OF ALL THREE MAIN ENGINES AFTER SRB SEPARATION AND PRIOR   ]
 ] TO AN INERTIAL VELOCITY OF ABOUT 20K FPS (3 ENGINE OUT GREEN CON-   ]
 ] TINGENCY ABORT PROCEDURE).  THE ET DOORS ARE NOT CLOSED IN THIS     ]
 ] SCENARIO BECAUSE THE ET SEP SEQUENCE IS TERMINATED AFTER ET SEP IS  ]
 ] COMMANDED IN OPS 1 BEFORE MM602 IS CALLED.  THEREFORE, THE ET UM-   ]
 ] BILICAL DOOR CLOSURE ROUTINE IS NEVER EXECUTED AND THE DOORS ARE    ]
 ] NOT AUTOMATICALLY CLOSED.                                           ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ]                                                                     ]
 ]      IN MM104, PRIOR TO REQUESTING AN RTLS ABORT, THE CREW CAN      ]
 ] INITIATE ET DOOR CLOSURE USING THE OVERRIDE DISPLAY, SPEC 51        ]
 ] ITEM 40.  IF RTLS ABORT IS REQUESTED PRIOR TO EXECUTING THE ITEM    ]
 ] ENTRY, THE CREW MUST USE THE ET UMBILICAL DOOR SWITCHES TO CLOSE    ]
 ] THE DOORS.                                                          ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]LSIS:  JEAN L. ZOPHY      DATE 01/10/95]                             ]
 ]     -------------------      ---------]                             ]
 ]ASD:   ERIC C. BINGHAM    DATE 01/10/95]                             ]
 ]     -------------------      ---------] DARRELL E. STAMPER 02/03/95 ]
 ]PF MGR:  J. P. RUPPERT    DATE 01/12/95]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_______________________________________]_____________________________]
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