 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] DR:              ]
 ]  J. ZOPHY          ]    PASS PROGRAM NOTE        ]      55312       ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:  12/12/83  ]
 ]  IBM/282-8409      ]      RELEASE NOTE( )        ] REV A: 09/27/90  ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ]   OI20 AND SUBS               ]  CREW (X)  GROUND ( )  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]        MAJOR SOFTWARE AREA:       ] OPS MODES AFFECTED:             ]
 ]SSW ( )  GNC (X)  VU ( )  SM/PL ( )]       G2                        ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA: ORBIT, DAP, RCS                                  ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS:  4.35                                          ]
 ]_____________________________________________________________________]
 ] TITLE:                                                              ]
 ]              ORBIT DAP RCS BURNS WHILE NOT AT GUIDANCE ATTITUDE     ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]     GOING FROM A MANUAL MODE TO AUTO MODE MAY CAUSE SOME UNEXPECTED ]
 ] ATTITUDE MANEUVERS.  IF EXECUTING AN AXIS BY AXIS GUIDED RCS BURN   ]
 ] IN A MANUAL MODE WHILE NOT AT THE GUIDANCE DETERMINED BURN ATTITUDE,]
 ] A MANEUVER TO THE GUIDANCE DETERMINED BURN ATTITUDE MAY BEGIN IF    ]
 ] AUTO MODE IS SELECTED.  TWO CASES WHERE THIS WILL HAPPEN ARE LISTED ]
 ] BELOW.                                                              ]
 ]                                                                     ]
 ]1) IF ITEM 27 ON THE ORBIT MNVR DISPLAY HAS BEEN SELECTED, A MANEUVER]
 ]   TO THE GUIDANCE DETERMINED BURN ATTITUDE MAY BEGIN IF AUTO MODE   ]
 ]   IS SELECTED ANY TIME BETWEEN EXECUTION OF THE MNVR ITEM (ITEM 27) ]
 ]   AND TRANSITION OUT OF MM202.                                      ]
 ]2) OR IF ITEM 27 ON THE ORBIT NMVR DISPLAY HAS NOT BEEN SELECTED, A  ]
 ]   MANEUVER TO THE BURN ATTITUDE MAY BEGIN IF AUTO MODE IS SELECTED  ]
 ]   ANY TIME BETWEEN THE TIG AND CUTOFF FOR THE GUIDED-DELTA-V-RCS-   ]
 ]   BURN.                                                             ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ] 1)  DO NOT SELECT AUTO BETWEEN TIG AND CUTOFF.                      ]
 ]                                                                     ]
 ] 2)  TO PREVENT THE MANEUVER, DO NOT SELECT AUTO BETWEEN EXECUTION   ]
 ]     OF THE MNVR ITEM AND TRANSITION OUT OF MM202.  TO INTERRUPT     ]
 ]     THE MANEUVER, SELECT A MANUAL MODE (INRTL, LVLH OR FREE DRIFT)  ]
 ]     AND THEN AUTO (DOES NOT WORK DURING GUIDED RCS BURN).           ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]IBM: CHARLES HALLIMAN     DATE 10/02/90]                             ]
 ]    --------------------      ---------]                             ]
 ]FDSD:   SAM ANKNEY        DATE 10/02/90]                             ]
 ]     -------------------      ---------] DARRELL E. STAMPER 10/31/90 ]
 ]PF MGR:  K. L. LINDSAY    DATE 10/09/90]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_______________________________________]_____________________________]
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