 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] SMS: B03926C     ]
 ] D. SWOPE           ]    BFS PROGRAM NOTE         ]                  ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:            ]
 ] RI/DNY   1981      ]      RELEASE NOTE ( )       ] 07/29/81         ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ] 11.24C AND SUBS               ]  CREW (X)  GROUND ( )  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]           MAJOR SOFTWARE AREA:            ] OPS MODES AFFECTED:     ]
 ]BSL( ) BSS(X) GNC( ) SEQ( ) SM/SP( ) IPL( )] 0 (ONORBIT)             ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA: PAYLOAD BAY DOORS, SPEC, DISPLAY, UI             ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: MG038101/3.12.2                                ]
 ]_____________________________________________________________________]
 ] TITLE: BFS PAYLOAD BAY DOOR OPERATION                               ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ]  PBD OPERATIONS CAUSE UNIQUE HANDLING OF SPEC'S AND                 ]
 ]  DISP'S IN BFS.  THE BFS OPERATES AS FOLLOWS:                       ]
 ]  (1) RESUME, MF SWITCH, DISP, AND SPEC REQUESTS OPERATE             ]
 ]      PER THE NORMAL INTERACTION OF STRUCTURES                       ]
 ]      REQUIREMENTS WHEN A PBD OPEN OR CLOSE SEQUENCE IS              ]
 ]      NOT IN PROGRESS.                                               ]
 ]  (2) RESUME, MF SWITCH, DISP AND SPEC REQUESTS OPERATE              ]
 ]      PER NORMAL INTERACTION OF STRUCTURES REQUIREMENTS AS           ]
 ]      LONG AS THERE IS MORE THAN ONE CRT WITH THE PBD SPEC           ]
 ]      ACTIVE.                                                        ]
 ]  (3) IF ONLY ONE CRT HAS THE PBD SPEC ACTIVE, A RESUME OF           ]
 ]      THE PBD SPEC IS ILLEGAL IF EITHER:                             ]
 ]      (A) PBD SW BYPASS (ITEM 14) IS NOT SELECTED AND THE            ]
 ]          PBD CONTROL SWITCH IS NOT IN THE STOP POSITION,            ]
 ]          OR                                                         ]
 ]      (B) PBD SW BYPASS (ITEM 14) IS SELECTED AND THE STOP           ]
 ]          ITEM (ITEM 16) IS NOT SELECTED.                            ]
 ]  (4) A CHANGE OF MF IS ALLOWED WHILE A PBD OPEN OR CLOSE            ]
 ]      SEQUENCE IS IN PROGRESS AND THE SEQUENCE WILL                  ]
 ]      CONTINUE.                                                      ]
 ]  (5) A PBD OPEN OR CLOSE SEQUENCE WILL CONTINUE IF A                ]
 ]      SPEC OR DISP IS CALLED ON TOP OF THE PBD SPEC.                 ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]RI:<S> D.L. ENTWISTLE     DATE 07/29/81]                             ]
 ] --------------------         ---------]                             ]
 ]SSD: SAM ANKNEY           DATE 08/10/88]                             ]
 ] --------------------         ---------] JACK BOYKIN        08/17/88 ]
 ]PF MGR: MICHAEL BRIEDEN   DATE 08/09/88]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_____________________________________________________________________]
 @






 +_____________________________________________________________________
 ]                                                                     ]
 ]                       SUPPLEMENTAL SHEET                            ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] AUTHOR:            ]                             ] SMS: B03926C     ]
 ] D. SWOPE           ]    BFS PROGRAM NOTE         ]                  ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:            ]
 ] RI/DNY    1981     ]      RELEASE NOTE ( )       ] 07/29/81         ]
 ]____________________]_____________________________]__________________]
 ] TITLE: BFS PAYLOAD BAY DOOR OPERATION                               ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]  (6) A SPEC MAY OVERLAY THE PBD SPEC, BUT IF AN OPEN OR             ]
 ]      CLOSE SEQUENCE IS IN PROGRESS AND THAT CRT IS THE              ]
 ]      ONLY CRT WITH THE PBD SPEC ACTIVE, A RESUME WILL               ]
 ]      RETURN TO THE PBD SPEC.                                        ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ]                                                                     ]
 ]  THE USER SHOULD BE AWARE THAT PBD OPERATIONS CAUSE                 ]
 ]  UNIQUE HANDLING OF SPEC'S AND DISP'S IN BFS.                       ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
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 ]                                                                     ]
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 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 @
