1+_____________________________________________________________________
 ] AUTHOR:            ]                             ] DR:              ]
 ] SCOTT DAHLKE       ]    PASS PROGRAM NOTE        ]       105359     ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE (X)  USER NOTE ( ) ] DATE:            ]
 ] LORAL/282-8532     ]      RELEASE NOTE( )        ]       02/14/94   ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ] OI-21 THRU OI-24              ]  CREW (X)  GROUND (X)  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]        MAJOR SOFTWARE AREA:       ] OPS MODES AFFECTED:             ]
 ]SSW ( )  GNC (X)  VU ( )  SM/PL (X)] G3                              ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA: COMMFAULTS DISP ENTRY GNC IMU NAV OPS TRANSITIONS]
 ]                    GNC/SM PAYLOADS                                  ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: 4.72, 4.127, 4.23, 6.35                        ]
 ]_____________________________________________________________________]
 ] TITLE:                                                              ]
 ]         ENTRY NAV INIT ANOMALY                                      ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ] FOR A PERIOD OF 4 SECONDS ABOUT 1 SECOND AFTER AN OPS 3             ]
 ] TRANSITION HAS COMPLETED THE PASS NAV STATE VELOCITY MAY APPEAR TO  ]
 ] GO STATIC AND THE COMPUTED ORBITAL ALTITUDE PARAMETERS (HEIGHT OF   ]
 ] APOGEE AND PERIGEE SHOWN ON THE XXXXX MNVR YYYYY DISPLAY) MAY       ]
 ] DEVIATE ABOUT 10 MILES AND THEN RETURN TO NORMAL.  THESE ARE THE    ]
 ] MOST NOTABLE EFFECTS WHEN THIS DR SCENARIO OCCURS.                  ]
 ]                                                                     ]
 ] AS LONG AS ONE READ ELEMENT ON EACH OF FF'S 1, 2, AND 3 HAS AN      ]
 ] I/O ERROR ON THE FIRST 2 MFE READS IN G3, THE IMU'S WILL BE         ]
 ] COMMFAULTED AND THIS PROBLEM MAY HAPPEN (E.G. IF ALL THREE          ]
 ] MSBLS UNITS ARE POWERED OFF ON TRANSITION TO G3, THIS PROBLEM       ]
 ] MAY HAPPEN).                                                        ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ]                                                                     ]
 ] GNC                                                                 ]
 ]                                                                     ]
 ] NO ACTION REQUIRED.  THE FLIGHT SOFTWARE OUTPUTS WILL RETURN TO     ]
 ] EXPECTED VALUES AFTER THE 4 SECOND TIME SPAN.                       ]
 ]                                                                     ]
 ] SM                                                                  ]
 ]                                                                     ]
 ] DEPENDENT UPON HOW THE SPECIFIC FLIGHT USES THE STATE VECTOR        ]
 ] PASSED TO IT FROM GNC.                                              ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]LORAL:   HUGH STOVALL     DATE 03/22/94]                             ]
 ]      ------------------      ---------]                             ]
 ]FDSD:    W. R. PRUETT     DATE 03/22/94]                             ]
 ]     -------------------      ---------] DARRELL E. STAMPER 03/22/94 ]
 ]PF MGR: M. N. MONTEZ      DATE 03/22/94]------------------- -------- ]
 ]        MICHAEL P. DEMASIE     03/22/94] CHAIRMAN, SASCB      DATE   ]
 ]_______________________________________]_____________________________]
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