1+_____________________________________________________________________
 ] AUTHOR:            ]                             ] DR:              ]
 ] CRAWFORD FLETCHER  ]    PASS PROGRAM NOTE        ]     106677       ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:            ]
 ]  IBM/282-7333      ]      RELEASE NOTE( )        ]     09/21/93     ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ]  OI-22 AND SUBS               ]  CREW (X)  GROUND (X)  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]        MAJOR SOFTWARE AREA:       ] OPS MODES AFFECTED:             ]
 ]SSW ( )  GNC (X)  VU ( )  SM/PL ( )]     G2                          ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA:   ORBIT, TARGET, DISP                            ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS:   5.10                                         ]
 ]_____________________________________________________________________]
 ] TITLE:                                                              ]
 ]         FAILURE TO CONVERGE IN PRECISION VELOCITY REQUIRED TASK     ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]  A COMPUTE T1 REQUEST FOR A LAMBERT TARGETED TI MANEUVER IS MADE    ]
 ] ON THE ORBIT TGT DISPLAY.  THE VALUES IN THE PRED MATCH FIELD WILL  ]
 ] DECREMENT FROM AN INITIAL LARGE NUMBER TO A VALUE THAT IS SLIGHTLY  ]
 ] LARGER THAN R_TOL.  THIS VALUE WILL PERSIST FOR THE REMAINDER OF    ]
 ] THE ITERATIONS AND WILL BE FOLLOWED BY THE 'TGT ITER' MESSAGE AND   ]
 ] ALARM.                                                              ]
 ]                                                                     ]
 ] SINCE THE VALUE IN THE PRED MATCH FIELD IS OTHER THAN 999999        ]
 ] (ALL 9'S), THE ERROR IS KNOWN TO HAVE OCCURRED IN THE PRECISION     ]
 ] VELOCITY REQUIRED TASK AND NOT THE LAMBERT TASK.                    ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ]  IF THE PRED MATCH FIELD IS OTHER THAN 999999 (ALL 9'S):            ]
 ]   -CONTACT MCC AND READ DOWN THE PRED MATCH VALUE FROM THE ORBIT TGT]
 ]    DISPLAY (MCC HAS DELTA-V'S)                                      ]
 ]   -ON MCC GO, RECALL TGT SET AND RECOMPUTE                          ]
 ]     IF 'TGT ITER' REOCCURS AND PRED MATCH IS LESS THAN 400:         ]
 ]      -ON MCC GO, EXECUTE THE BURN SOLUTION AS CALCULATED BY ONBOARD ]
 ]       TARGETING                                                     ]
 ]     IF 'TGT ITER' REOCCURS AND PRED MATCH IS GREATER THAN 400:      ]
 ]      -ON MCC GO, LOAD GROUND SOLUTION AND EXECUTE AS EXT DV BURN    ]
 ]  IF 'TGT ITER' OCCURS AND PRED MATCH 999999 (ALL 9'S):              ]
 ]   -ON MCC GO, LOAD GROUND SOLUTION AND EXECUTE AS EXT DV BURN       ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]IBM:   JEAN L. ZOPHY      DATE 11/09/93]                             ]
 ]    --------------------      ---------]                             ]
 ]FDSD:   W. R. PRUETT      DATE 11/10/93]                             ]
 ]     -------------------      ---------] DARRELL E. STAMPER 11/12/93 ]
 ]PF MGR:   H. S. ESTES     DATE 11/12/93]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_______________________________________]_____________________________]
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