 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] DR:              ]
 ] K. BENIKE          ]    PASS PROGRAM NOTE        ]     38458        ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:            ]
 ] VER/282-8451       ]      RELEASE NOTE( )        ] SEP. 1987        ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ] REL 18 AND SUBS               ]  CREW (X)  GROUND ( )  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]        MAJOR SOFTWARE AREA:       ] OPS MODES AFFECTED:             ]
 ]SSW (X)  GNC ( )  VU ( )  SM/PL ( )] G1, G2, G3, G6, G8, G9          ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA: ICC, OPS, TRANSITIONS                            ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: SDPS                                           ]
 ]_____________________________________________________________________]
 ] TITLE:                                                              ]
 ] DUAL COMMANDERS AFTER LOSS OF RECONFIGURATION ICC MESSAGES          ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ] A DUAL COMMANDER SITUATION CAN BE ENCOUNTERED AT THE COMPLETION OF  ]
 ] AN UNSUCCESSFUL OPS TRANSITION/OPS MODE RECALL ATTEMPTING TO        ]
 ] EXPAND THE CURRENT RS. THE CONDITIONS REQUIRED FOR THIS TO HAPPEN   ]
 ] ARE:                                                                ]
 ]                                                                     ]
 ]  - GPC RECONFIGURATION IS EXPANDING THE CURRENT RS TO INCLUDE A CS  ]
 ]    GPC WHICH IS IN COMMAND OF A BUS WHICH WILL BE (DUE TO NBAT      ]
 ]    CHANGES) COMMANDED BY A FORMER RS MEMBER.                        ]
 ]                                                                     ]
 ]  - THE CS GPC DOES NOT RECEIVE RECONFIGURATION ICC MESSAGES DUE TO  ]
 ]    CS F-T-S AND THEREFORE WILL NOT GIVE UP COMMAND OF THE           ]
 ]    APPROPRIATE BUS.                                                 ]
 ]                                                                     ]
 ]  - THE RS GPC'S WILL EXPAND THE CURRENT RS TO INCLUDE THE CS GPC    ]
 ]    AND RECONFIGURE BUSES MAKING A FORMER RS GPC COMMANDER.          ]
 ]                                                                     ]
 ]  - A F-T-S WILL OCCUR IN THE RS GPC'S DROPPING THE CS GPC.          ]
 ]                                                                     ]
 ] THE RESULT IS BOTH A RS GPC AND THE FAILED CS GPC ARE NOW           ]
 ] COMMANDING THE SAME BUS, WHICH IS A POTENTIAL RS F-T-S SITUATION.   ]
 ]_____________________________________________________________________]
 ] USER RESPONSE:                                                      ]
 ]                                                                     ]
 ] THE FAILING CS GPC SHOULD BE TAKEN TO STBY IMMEDIATELY.             ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]IBM: WYATT COOPER         DATE 8/4/88  ]                             ]
 ]    --------------------      ---------]                             ]
 ]SSD: SAM ANKNEY           DATE 8/10/88 ]                             ]
 ]    --------------------      ---------] JACK BOYKIN         8/17/88 ]
 ]PF MGR: MICHAEL BRIEDEN   DATE 8/8/88  ]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_______________________________________]_____________________________]
 @
