 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] SMS:  B02747     ]
 ] R.J. CMELAK        ]    BFS PROGRAM NOTE         ]                  ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:  09/08/82  ]
 ] RID 922-5246       ]      RELEASE NOTE ( )       ] REV B: 03/22/91  ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ]    OI 8F AND SUBS             ]  CREW (X)  GROUND (X)  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]           MAJOR SOFTWARE AREA:            ] OPS MODES AFFECTED:     ]
 ]BSL( ) BSS(X) GNC( ) SEQ(X) SM/SP(X) IPL(X)] 0 (ONORBIT), 3          ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA:  BEC, FDA, IPL, UI                               ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: MG038120/3.3.1.15                              ]
 ]_____________________________________________________________________]
 ] TITLE:  BFS IPL ON ORBIT (FLT_MODE_FLAG)                            ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ]  THE FLIGHT MODE FLAG (FLT_MODE_FLAG) IS SET TO "1" WHEN BFS IS     ]
 ]  MODED TO OPS 0 FROM ASCENT.  HOWEVER, IF THE BFS GPC IS RE-IPL'ED  ]
 ]  ON ORBIT THE FLIGHT MODE FLAG WILL BE INITIALIZED TO "0" AND THE   ]
 ]  FOLLOWING ON-ORBIT FUNCTIONS WILL NOT BE SCHEDULED:                ]
 ]  1.  CABIN PRESSURE LEAK DETECTION                                  ]
 ]  2.  ON ORBIT OPS 0 FDA                                             ]
 ]  3.  DOWNLIST FORMAT WILL BE ASCENT INSTEAD OF ENTRY                ]
 ]                                                                     ]
 ]  ALSO UPON RE-IPL, THE WATER SPRAY BOILER GASEOUS NITROGEN QUANTITY ]
 ]  INITIALIZES TO THE ILOAD VALUE.                                    ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ]                                                                     ]
 ]  THE USER SHOULD BE AWARE THAT IF THE BFS IS RE-IPL'ED              ]
 ]  ON ORBIT, THE BFS FLT_MODE_FLAG WILL NOT BE SET FOR ON             ]
 ]  ORBIT FUNCTIONS.  THE FOLLOWING PROCEDURE MAY BE USED TO           ]
 ]  SET THE FLT_MODE_FLAG AND UPLINK THE GASEOUS NITROGEN QUANTITY.    ]
 ]   PRO PASS TO MM301                                                ]
 ]   PRO BFS TO MM301 - THIS SETS FLT_MODE_FLAG.                      ]
 ]    TMBU THE CORRECT QUANTITY OF GASEOUS NITROGEN.                   ]
 ]   PRO BFS TO OPS 0                                                 ]
 ]   RECONFIGURE PASS TO OPS 2                                        ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]RI:<S> C. PURTELL        DATE 03/22/91 ]                             ]
 ]   ------------------         ---------]                             ]
 ]FDSD:  W. R. PRUETT      DATE  05/03/91]                             ]
 ]     ----------------         ---------] DARRELL E. STAMPER 05/08/91 ]
 ]PF MGR:  D. STEPHENSON    DATE 05/02/91]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_____________________________________________________________________]
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