 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] DR:              ]
 ] G. GOFFNEY         ]    PASS PROGRAM NOTE        ]     35572   *    ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE: AUG. 1987  ]
 ] VER/282-7044       ]      RELEASE NOTE( )        ] REV B: 10/24/89  ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ] REL 19 AND SUBS               ]  CREW (X)  GROUND ( )  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]        MAJOR SOFTWARE AREA:       ] OPS MODES AFFECTED:             ]
 ]SSW ( )  GNC (X)  VU ( )  SM/PL ( )]  G8                             ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA: ACTUATORS, DISP                                  ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: V5.1.10, V4.19                                 ]
 ]_____________________________________________________________________]
 ] TITLE:                                                              ]
 ] EXECUTION OF SECONDARY ACTUATOR CHECK                               ]
 ]_____________________________________________________________________]
 ] DESCRIPTION: * 44250, 46503                                         ]
 ]                                                                     ]
 ] THE FOLLOWING CONDITIONS CAN OCCUR WHEN RUNNING THE SECONDARY       ]
 ] ACTUATOR CHECK:                                                     ]
 ]                                                                     ]
 ] A. THE SECONDARY ACTUATOR TEST DELTA (SIX DEGREES) IS ADDED TO      ]
 ]    THE LEFT JUSTIFIED AEROSURFACE POSITION FEEDBACK VALUE. IF THE   ]
 ]    ACTUATOR IS NEAR AN EXTREME POSITION, THE DELTA COULD CAUSE      ]
 ]    THE COMMAND STIMULUS FOR THE CHANNEL UNDER TEST TO OVERFLOW.     ]
 ]    THE OVERFLOW CONDITION MAY CAUSE THE SIGN OF THE STIMULUS TO     ]
 ]    CHANGE AND THE TEST RESULTS TO BE UNPREDICTABLE.                 ]
 ]                                                                     ]
 ] B. IF A BYPASS CONDITION IS ENTERED (ITEM 15-18) BEFORE ALL         ]
 ]    ACTUATORS ARE TO THEIR FINAL ADT TEST VALUES, THE DOWN ARROW     ]
 ]    RESULTS WILL BE UNPREDICTABLE.  ALSO, THE STATE OF THE DOWN      ]
 ]    ARROW ON CHANNEL 1 WILL CHANGE WHEN THE FINAL VALUE IS REACHED   ]
 ]    ON ALL ACTUATORS.                                                ]
 ]                                                                     ]
 ] C. WHEN A BYPASS CONDITION FOR CHANNEL 1 IS ENTERED (ITEM 15),      ]
 ]    THE COMMANDED VALUES ARE DISPLAYED IN THE COMMAND COLUMN OF      ]
 ]    THE DISPLAY. THIS CAUSES THE COMMAND VALUE AND THE FEEDBACK      ]
 ]    POSITION TO BE OUT OF LIMITS.  DOWN ARROWS IN THE STATUS         ]
 ]    COLUMN OF ALL ACTUATORS WILL RESULT BECAUSE THE STATUS           ]
 ]    COLUMN IS DRIVEN ONLY OFF OF CHANNEL 1.                          ]
 ]                                                                     ]
 ] D. THE STATUS COLUMN WILL NOT DISPLAY A DOWN ARROW WHEN CHANNELS    ]
 ]    2-4 ARE BYPASSED. THIS IS BECAUSE THE STATUS COLUMN IS DRIVEN    ]
 ]    ONLY OFF OF A COMPARISON OF CHANNEL ONE COMMANDS AND FEEDBACK    ]
 ]    POSITIONS.                                                       ]
 ]                                                                     ]
 ] E. THE ACTUATOR BYPASS WILL NOT WORK AS EXPECTED (NO DOWN ARROW),   ]
 ]    IF MORE THAN TWO CHANNELS ARE BYPASSED.  THIS APPLIES TO ALL     ]
 ]    ACTUATORS EXCEPT RUDDER WHICH WILL NOT BYPASS IF ONE CHANNEL     ]
 ]    WAS PREVIOUSLY BYPASSED.                                         ]
 ]                                                                     ]
 ]_____________________________________________________________________]
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 +_____________________________________________________________________
 ]                       SUPPLEMENTAL SHEET                            ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] AUTHOR:            ]                             ] DR:              ]
 ] G. GOFFNEY         ]    PASS PROGRAM NOTE        ]     35572   *    ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE: AUG. 1987  ]
 ] VER/282-7044       ]      RELEASE NOTE ( )       ] REV B: 10/24/89  ]
 ]____________________]_____________________________]__________________]
 ] TITLE:                                                              ]
 ] EXECUTION OF SECONDARY ACTUATOR CHECK                               ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ] F. THE AEROSURFACE DRIVE TEST SOFTWARE IN G8 COMPARES THE AERO-     ]
 ]    SURFACE POSITION FEEDBACK TO THE COMMAND STIMULUS.  IF THEY      ]
 ]    DIFFER BY MORE THAN 1 DEGREE A DOWN ARROW IS DISPLAYED AND       ]
 ]    ALSO THE FAULT MESSAGE "AERO DRIVE" IS ANNUNCIATED.  WHENEVER    ]
 ]    SECONDARY ACTUATOR CHECK (CHANNEL 1) IS RUN, THE DOWN ARROW      ]
 ]    AND FAULT MESSAGE IS GENERATED BECAUSE OF A 6 DEGREE DIFFERENCE  ]
 ]    BETWEEN THE COMMAND AND POSITION.                                ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ]                                                                     ]
 ] A. RUN ADT AT LEAST ONCE AFTER ENTERING GNC OPS 8 BEFORE            ]
 ]    PERFORMING SECONDARY ACTUATOR CHECK.                             ]
 ]                                                                     ]
 ] B. AFTER RUNNING ADT TEST, WAIT UNTIL ALL ACTUATORS HAVE DRIVEN TO  ]
 ]    THEIR FINAL VALUE, PRIOR TO RUNNING SECONDARY ACTUATOR CHECK.    ]
 ]                                                                     ]
 ] C. NO ACTION.                                                       ]
 ]                                                                     ]
 ] D. NO ACTION.                                                       ]
 ]                                                                     ]
 ] E. RESET EACH CHANNEL BEFORE REQUESTING A BYPASS FOR ANOTHER        ]
 ]    CHANNEL.                                                         ]
 ]                                                                     ]
 ] F. RESET FAULT MESSAGE - THIS IS A NORMAL CONDITION DURING          ]
 ]    SECONDARY ACTUATOR CHECKS.                                       ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]IBM: WYATT COOPER         DATE 11/28/89]                             ]
 ]    --------------------      ---------]                             ]
 ]SSD: SAM ANKNEY           DATE 11/30/89]                             ]
 ]    --------------------      ---------]M.C. GREMILLION     12/07/89 ]
 ]PF MGR: J.A. VERNON       DATE 12/05/89]------------------- -------- ]
 ]         ---------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]        ERIC C. BINGHAM       12/05/89 ]                             ]
 ]        GEORGE BULL JR.       12/05/89 ]                             ]
 ]_______________________________________]_____________________________]
 @
