 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] DR:              ]
 ] J. BRADBURY        ]    PASS PROGRAM NOTE        ]    103828 *      ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:  11/01/89  ]
 ] SSOAS/282-7368     ]      RELEASE NOTE( )        ] REV B: 06/14/95  ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ] OI-23 AND SUBS                ]  CREW (X)  GROUND (X)  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]        MAJOR SOFTWARE AREA:       ] OPS MODES AFFECTED:             ]
 ]SSW ( )  GNC (X)  VU ( )  SM/PL ( )]   G6                            ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA:   GUID, ABORT, GPC, MECO                         ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: 4.4                                            ]
 ]_____________________________________________________________________]
 ] TITLE:                                                              ]
 ]        POSSIBLE FSW EFFECTS WHEN LAST SSME FAILED/SHUT DOWN IN RTLS ]
 ]_____________________________________________________________________]
 ]         * REFERENCE DR 109672                                       ]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ]  IF THE LAST REMAINING SSME IS FAILED OR SHUT DOWN PRIOR TO 60      ]
 ] SECONDS (KLOAD TGO_IA) BEFORE POWERED PITCHDOWN, SEVERAL UNUSUAL    ]
 ] FSW EFFECTS MAY BE VISIBLE TO THE CREW AND/OR THE GROUND:           ]
 ]                                                                     ]
 ]  VISIBLE TO THE CREW AND GROUND:                                    ]
 ]                                                                     ]
 ]   IF AN OMS DUMP IS IN PROGRESS WHEN MECO OCCURS, THEN THE DISPLAYED]
 ] TIME OF MECO ON THE RTLS TRAJ DISPLAY MAY CHANGE SIGNIFICANTLY,     ]
 ] EVEN TO AN APPARENTLY EARLIER TIME.  IF MECO OCCURS DURING FUEL     ]
 ] DISSIPATION, THE GUID FIELD ON THE RTLS TRAJ DISPLAY MAY CHANGE TO  ]
 ] "INIT".                                                             ]
 ]                                                                     ]
 ]  VISIBLE TO THE GROUND ONLY:                                        ]
 ]                                                                     ]
 ]   IF AN OMS DUMP IS IN PROGRESS WHEN MECO OCCURS, A SINGLE GPC ERROR]
 ] MAY OCCUR.  THE ERROR WILL BE EITHER A DIVISION BY ZERO (GROUP 3,   ]
 ] CODE 0C) OR AN EXPONENT OVERFLOW (GROUP 3, CODE 0B) IN CSECT        ]
 ]                                                                     ]
 ]                  - CONTINUED ON SUPPLEMENT PAGE -                   ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ]                                                                     ]
 ] BE AWARE THAT THE ABOVE EFFECTS CAN OCCUR UNDER THESE CIRCUMSTANCES.]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]SSOAS:  JEAN L. ZOPHY     DATE 07/10/96]                             ]
 ]      ------------------      ---------]                             ]
 ]ASD:  ERIC C. BINGHAM     DATE 07/11/96]                             ]
 ]    --------------------      ---------] DARRELL E. STAMPER 07/15/96 ]
 ]PF MGR:JOHN W. CRAFT.,JR. DATE 07/12/96]------------------- -------- ]
 ]       ------------------     ---------] CHAIRMAN, SASCB      DATE   ]
 ]_______________________________________]_____________________________]
 @





 +_____________________________________________________________________
 ]                                                                     ]
 ]                       SUPPLEMENTAL SHEET                            ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] AUTHOR:            ]                             ] DR:              ]
 ] J. BRADBURY        ]    PASS PROGRAM NOTE        ]    103828 *      ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:  11/01/89  ]
 ] SSOAS/282-7368     ]      RELEASE NOTE( )        ] REV B: 06/14/95  ]
 ]____________________]_____________________________]__________________]
 ] TITLE:                                                              ]
 ]        POSSIBLE FSW EFFECTS WHEN LAST SSME FAILED/SHUT DOWN IN RTLS ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ] GG7_PW_RTLS (PDE = MFE).  ALSO, INDEPENDENT OF WHETHER OR NOT THE   ]
 ] GPC ERROR OCCURS, THE FOLLOWING VARIABLES MAY HAVE INCORRECT VALUES ]
 ] IN THE DOWNLIST:  THE UNIT VECTOR NORMAL TO THE DESIRED TRAJECTORY  ]
 ] PLANE, IY; THE MAGNITUDE OF THE VELOCITY-TO-BE-GAINED, VGOMAG;  AND ]
 ] THE DESIRED THROTTLE SETTING FOR PEG, K_DESIRED.                    ]
 ]                                                                     ]
 ]   REGARDLESS OF WHETHER AN OMS DUMP IS IN PROGRESS WHEN MECO OCCURS,]
 ] POWERED RTLS GUIDANCE MAY GO UNCONVERGED PRIOR TO MECO CONFIRMED,   ]
 ] INDICATED BY VARIABLE SCONV = OFF IN THE DOWNLIST.  THE ADI ERROR   ]
 ] NEEDLES WILL NOT BE STOWED BECAUSE PEG IS NO LONGER EXECUTING.      ]
 ]                                                                     ]
 ] NONE OF THE ABOVE WILL OCCUR IN A FAST SEP.                         ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 @
