 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] SMS: B22509 *    ]
 ] J. KIEL            ]    BFS PROGRAM NOTE         ]                  ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:            ]
 ] RI DOWNEY, X-3738  ]      RELEASE NOTE ( )       ] 06/06/88         ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ]     OI8C & SUBS               ]  CREW (X)  GROUND ( )  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]           MAJOR SOFTWARE AREA:            ] OPS MODES AFFECTED:     ]
 ]BSL( ) BSS( ) GNC( ) SEQ(X) SM/SP( ) IPL( )] 3, 6                    ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA: SEQ                                              ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: MG038120/3.3.1.11                              ]
 ]_____________________________________________________________________]
 ] TITLE: VENT DOOR USER NOTE UPDATE (OI-8C)                           ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]   CR 89430 (MM305/603 VENT DOOR UPDATE), IMPLEMENTED IN OI-8C, MADE ]
 ]   MANUAL VENT DOOR CLOSE OPERATIONS ILLEGAL IN MAJOR MODE 305 AND   ]
 ]   603 EXCEPT AFTER ROLLOUT. THEREFORE, ALL ITEMS IN USER NOTE       ]
 ]   B02859 PERTAINING TO THESE OPERATIONS MUST BE UPDATED TO REFLECT  ]
 ]   THIS NEW STATUS.                                                  ]
 ]                                                                     ]
 ]   THIS USER NOTE SUPERCEDES THE USER RESPONSE FOR USER NOTE B02859  ]
 ]   FOR OI-8C.  THE ORIGINAL USER NOTE IS STILL APPLICABLE FOR        ]
 ]   OI-8B.                                                            ]
 ]                                                                     ]
 ]   * THIS USER NOTE IS AFFECTED BY DR 101921 (USER NOTE B22519).     ]
 ]_____________________________________________________________________]
 ] USER RESPONSE:                                                      ]
 ]  THE USER SHOULD BE AWARE THAT FOR BFS OPERATION:                   ]
 ]  A. THE TOTAL TIME TO COMMAND ALL VENT DOORS OPEN OR CLOSE IN RTLS  ]
 ]     OR ENTRY WILL BE APPROXIMATELY 6.0 SECONDS RATHER THAN 3.0      ]
 ]     SECONDS BECAUSE OF THE 1.04 HZ EXECUTION RATE.                  ]
 ]  B. ALL CREW ITEM ENTRIES TO THE VENT DOOR SEQUENCE SHALL BE ILLEGAL]
 ]     PRE-ENGAGED.                                                    ]
 ]  C. CREW ITEM ENTRIES SHALL ONLY BE LEGAL POST-ENGAGED IN OPS 3 OR  ]
 ]     MAJOR MODES 602 AND 603.                                        ]
 ]  D. CREW ITEM ENTRIES FOR OPENING THE VENT DOORS WILL BE HONORED    ]
 ]     IN OPS 3, OR MAJOR MODES 602 AND 603.                           ]
 ]  E. CREW ITEM ENTRIES FOR CLOSING THE VENT DOORS WILL BE HONORED    ]
 ]     IN MAJOR MODES 301 THROUGH 304, 602, AND MAJOR MODES 305 AND    ]
 ]     603 AFTER ROLLOUT.                                              ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]RI: <S> C. PURTELL        DATE 04/10/89]                             ]
 ]    --------------------      ---------]                             ]
 ]SSD: SAM ANKNEY           DATE 04/20/89]                             ]
 ]    --------------------      ---------]  JACK G. BOYKIN     05/01/89]
 ]PF MGR: JAMES JANNEY      DATE 04/24/89]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_____________________________________________________________________]
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