 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] DR:              ]
 ] WENDY WILKINSON    ]    PASS PROGRAM NOTE        ]        110431    ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE (X)  USER NOTE ( ) ] DATE:            ]
 ] SSOAS/(281)335-2235]      RELEASE NOTE( )        ]        09/29/97  ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ] OI-25 THRU OI-27              ]  CREW (X)  GROUND (X)  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]        MAJOR SOFTWARE AREA:       ] OPS MODES AFFECTED:             ]
 ]SSW ( )  GNC ( )  VU ( )  SM/PL (X)]   S2, S4                        ]
 ]___________________________________]_________________________________]
 ] SOFTWARE SUB-AREA:  PSP COMM                                        ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS:  S4.9                                          ]
 ]_____________________________________________________________________]
 ] TITLE:                                                              ]
 ]         MISROUTED PSP COMMANDS WITH COMPLETE OF04 FAILURE           ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ]  WHEN THERE IS A COMPLETE FAILURE OF MDM OF04 AND PAYLOADS ARE      ]
 ]  BEING COMMANDED ON BOTH THE UMBILICAL (ATTACHED PAYLOADS) AND      ]
 ]  THE PI (DETACHED PAYLOADS), THERE IS A SMALL POSSIBILITY OF A      ]
 ]  COMMAND BEING MISROUTED.                                           ]
 ]                                                                     ]
 ]  THIS CAN HAPPEN IF, AS A RESULT OF THE MDM FAILURE, THE FLIGHT     ]
 ]  SOFTWARE INCORRECTLY DETECTS AN UMBILICAL CONFIGURATION WHEN A     ]
 ]  PI CONFIGURATION EXISTS AND PASSES A COMMAND INTENDED FOR THE      ]
 ]  UMBILICAL TO THE PI.                                               ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ]                                                                     ]
 ]  POTENTIALLY HAZARDOUS COMMANDS SHOULD NOT BE ISSUED DURING TIMES   ]
 ]  OF HEAVY COMMANDING, WHEN COMMANDS ARE BEING SWAPPED FROM          ]
 ]  ATTACHED TO DETACHED PAYLOADS AND VICE VERSA REPEATEDLY.           ]
 ]                                                                     ]
 ]  PAYLOAD COMMANDING SHOULD BE TERMINATED WHEN AN OF04 MDM FAILURE   ]
 ]  EXISTS: "S62 BCE BYP OF B".                                        ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]SSOAS:  JOHN MAGLEY       DATE 11/04/97]                             ]
 ]     -------------------      ---------]                             ]
 ]ASD:   ERIC C. BINGHAM    DATE 11/04/97]                             ]
 ]     -------------------      ---------] DARRELL E. STAMPER 11/13/97 ]
 ]PF MGR:  JAMES BAGWELL    DATE 11/05/97]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_______________________________________]_____________________________]
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